Recent cases of casualty of workers in rubber latex factories due to hydrogen sulfide call for urgent
attention to better understanding, prevention of damages in working and living in risky environments,
and promotion of public and labor awareness. Specific responsible organization here is the subcontractor
of latex factories. H2
S characteristics, sources and symptoms from exposure are emphasized. Proper
practice should be followed strictly along with better cooperation among experts for the main objective
in saving lives and greater safety in living and working.
PHL 317.81 25 July 2016
Question 5 Summer B (Jn-Au) 2016
Question 5
Due: 3 August 2016
In “A Few Words on Non-Intervention,” J. S. Mill (46) writes about a drawing of distinctions between civilized and barbaric peoples. (577 ++) Also, he continues on with the obligations that the country intervening in the affairs of another incurs. What are these distinctions and obligations?
Running Head: CHEMICAL RESEARCH PAPER
1
CHEMICAL RESEARCH PAPER
12
Chemical Research Paper
Name
Institution
Table Contents
31.0 Abstract
31.0Introduction
42.0 H2S Properties
53.0 Common Use
64.0 Exposure and Health Effects
85.0 Government Regulation
96.0 Control Method
107.0 Case Studies
108.0 Conclusion
109.0 Recommendation
1110.0 References
CHEMICAL RESEARCH PAPER
1.0 Abstract
Hydrogen sulfide gas has gained a lot of industrial usage in the current times. This has left many people especially those working in such firms to be exposed to the dangers that come with this gas that is largely poisonous hence the need to ensure that the people working in such environments are provided with the personal protective equipment to shield them from the harmful effects of the gas given that their organizational roles keeps them in contact with this gas. This chemical research paper narrows down to the properties of this particular gas, its health hazards for those exposed to it, the common usage of this gas and its regulation by the government within the working environment. This report is very central given that numerous death have resulted from workers being exposed to the toxic effects of this gas hence the need to highlight the core features of this gas and make recommendations that if adopted with the relevant organizations will save lives.
2.0 Introduction
Hydrogen sulfide (H2S) is a gas that naturally occurs in hot springs, crude petroleum, and even natural gas. This gas is usually produced by the breakdown of organic materials commonly found in wastes of human and animals by bacteria. Some of the activities that commonly result to the production of hydrogen sulfide gas include treatment of wastewater, drilling and even refining of petroleum or natural gas (Occupational Safety and Health Administration, 2016).
Aside from being in a form of gas, hydrogen sulfide may also exist as a gas, which is compressed to become a liquid. It is commonly found in places which are enclosed and have poor ventilation because it travels along the ground as a result of its heavier weight than air. Some of the common locations of hydrogen sulfide include basements, and sewer lines (Occupational Safety and Health Administration, 2016).
H2S is becoming public concern, especially because enormous number of industries useH2S in their manufacture. Hence, enormous numbers of workers are exposed to it. In this report I am going to thoroughly explain H2S properties, common use of H2S, health effects, and the government regulation of H2S in .
Hydrogen Sulfide (H2S)
Hydrogen sulfide is a colorless, flammable, extremely hazardous gas with a “rotten
egg” smell. Some common names for the gas include sewer gas, stink damp,
swamp gas and manure gas. It occurs naturally in crude petroleum, natural gas,
and hot springs. In addition, hydrogen sulfide is produced by bacterial breakdown
of organic materials and human and animal wastes (e.g., sewage).
Industrial activities that can produce the gas include petroleum/natural gas
drilling and refining, wastewater treatment, coke ovens, tanneries, and kraft
paper mills. Hydrogen sulfide can also exist as a liquid compressed gas.
ChemTox Chemical Research Paper Requirements SFTY 4213.docxchristinemaritza
Chem/Tox
Chemical Research Paper Requirements
SFTY 4213/5213 crn 37012/37013
Block 2, summer 2016
Term Paper Requirements (100 points)
The student will write a research paper on a chemical, or group of
chemicals, that present toxicity to humans. The subject chemical must be
approved by the professor before research can begin.
The paper must include discussions regarding the specific chemical’s
chemical name, physical properties, common uses, exposure limits,
toxicokinetics, acute effects including target organs, chronic effects
including target organs, and protocols for industrial hygiene sampling and
sample analysis.
The term paper must follow APA formatting and style guidelines, and shall
consist of a cover page, table of contents, abstract or executive summary,
body of the paper (not less than 5-7 pages), and a reference list at the end
of the paper. You must cite your sources using Purdue OWL in APA. The
paper must be typed using Arial 12 point. In addition, the term paper must
include:
a. what the chemical is or was used for
b. why is this chemical on the Substance Priority List (SPL)
c. what are the human health, toxicity, and exposure concerns
d. site specific examples that put this chemical on the SPL
e. list and discuss at least one documented case (court
case,EPA,CERCLA, etc.) where this chemical(s) were used
and what happened. Also include: a clearly defined
statement of the situation, an analysis of the risks involved,
and solution(s) to the problem
Structure, presentation, and grammatical accuracy will be considered in
the grading. The term paper is due on or before July 28
th
and must be
submitted through the appropriate drop box. Late papers will not be
accepted.
Darwish 6
Table of Contents
About the Author……………………………………………………………….....2
Introduction……………………………………………………………………......3
H2S Properties……………………………………………………………………..4
Common Use………………………………………………………………………5
Exposure and Health effects…………………………………………………….…6
Government Regulation………………………………………………………...….8
Control Method…………………………………………………………………….9
Case Study………………………………………………………………………….9
Conclusion..……………………………………………………………………….10
Recommendation……………………………………………………………….....10
Work cite……………………………………………………………………...…..11
Appendix……………………………………………………………………...…..12
Introduction
Hydrogen sulfide (H2S) is a gas that naturally occurs in hot springs, crude petroleum, and even natural gas. This gas is usually produced by the breakdown of organic materials commonly found in wastes of human and animals by bacteria. Some of the activities that commonly result to the production of hydrogen sulfide gas include treatment of wastewater, drilling and even refining of petroleum or natural gas (Occupational Safety and Health Administration).
Aside from being in a form of gas, hydrogen sulfide may also exist as a gas, which is compressed to become a liquid. It is commonly found in places which are enclosed and hav ...
FROM NOW I WILL HAVE 2 DISCUSSION EVERY WEEK FOR EACH CLASS AND I .docxhanneloremccaffery
FROM NOW I WILL HAVE 2 DISCUSSION EVERY WEEK FOR EACH CLASS AND I NEED YOUR HELP PLEASE.. THANKS
DISCUSSION Class # 1 / 499
=====================================================================
Week 2 Discussion 1
"Union Pacific Corporation" Please respond to the following:
· Perform an analysis of the social / demographic, technological, economic, environmental / geographic, and political/legal / governmental segments to understand the general environment facing Union Pacific.
· Describe how Union Pacific will be affected by each of these external factors.
Week 2 Discussion 2
"Five Forces of Competition Model" Please respond to the following:
From the e-Activity, analyze the industry you selected using the Five Forces of Competition Model to determine the impact of each of the five forces.
· • Threat of New Entrants
· • Threat of Substitute Products
· • Bargaining Power of Buyers (Customers)
· • Bargaining Power of Suppliers
· • Rivalry Among Competing Firms in an industry
·
Based on your analysis, determine if the industry is attractive or unattractive. Explain your rationale.
===============================================================
DISCUSSION Class # 2 / 409
Week 2 Discussion 1
"Compensation Tactics" Please respond to the following:
· From the e-Activity, determine how the law you researched influences compensation strategies for all companies directly affected by the law in your state. Provide specific examples to support your response.
· Some people say that unions make it more difficult for companies to attain competitive advantage. Explain why you agree or disagree with this statement.
Do Unions Raise Wages? Martocchio_sc7inppt_02.pptx
Week 2 Discussion 2
"Discretionary Employee Benefits" Please respond to the following:
· Analyze the various codes and acts regarding discretionary employee benefits discussed in Chapter 2 and determine which code or law has had the greatest impact on the largest number of organizations. Explain your rationale.
· Building on the same analysis, determine the most likely issue regarding discretionary employee benefits and a likely law that would address the issue. Provide specific examples to support your response.
===================================================================
Bottom of Form
Bottom of Form
Bottom of Form
Bottom of Form
Introduction
Hydrogen sulfide (H2S) is a gas that naturally occurs in hot springs, crude petroleum, and even natural gas. This gas is usually produced by the breakdown of organic materials commonly found in wastes of human and animals by bacteria. Some of the activities that commonly result to the production of hydrogen sulfide gas include treatment of wastewater, drilling and even refining of petroleum or natural gas (Occupational Safety and Health Administration).
Aside from being in a form of gas, hydrogen sulfide may also exist as a gas, which is compressed to become a liquid. It is commonly found in places which ...
Presentation on Chemical Hazards in Industry and protection of workers, diagnosis of adverse health effects. Creating their awareness and guidance to Doctors.
PHL 317.81 25 July 2016
Question 5 Summer B (Jn-Au) 2016
Question 5
Due: 3 August 2016
In “A Few Words on Non-Intervention,” J. S. Mill (46) writes about a drawing of distinctions between civilized and barbaric peoples. (577 ++) Also, he continues on with the obligations that the country intervening in the affairs of another incurs. What are these distinctions and obligations?
Running Head: CHEMICAL RESEARCH PAPER
1
CHEMICAL RESEARCH PAPER
12
Chemical Research Paper
Name
Institution
Table Contents
31.0 Abstract
31.0Introduction
42.0 H2S Properties
53.0 Common Use
64.0 Exposure and Health Effects
85.0 Government Regulation
96.0 Control Method
107.0 Case Studies
108.0 Conclusion
109.0 Recommendation
1110.0 References
CHEMICAL RESEARCH PAPER
1.0 Abstract
Hydrogen sulfide gas has gained a lot of industrial usage in the current times. This has left many people especially those working in such firms to be exposed to the dangers that come with this gas that is largely poisonous hence the need to ensure that the people working in such environments are provided with the personal protective equipment to shield them from the harmful effects of the gas given that their organizational roles keeps them in contact with this gas. This chemical research paper narrows down to the properties of this particular gas, its health hazards for those exposed to it, the common usage of this gas and its regulation by the government within the working environment. This report is very central given that numerous death have resulted from workers being exposed to the toxic effects of this gas hence the need to highlight the core features of this gas and make recommendations that if adopted with the relevant organizations will save lives.
2.0 Introduction
Hydrogen sulfide (H2S) is a gas that naturally occurs in hot springs, crude petroleum, and even natural gas. This gas is usually produced by the breakdown of organic materials commonly found in wastes of human and animals by bacteria. Some of the activities that commonly result to the production of hydrogen sulfide gas include treatment of wastewater, drilling and even refining of petroleum or natural gas (Occupational Safety and Health Administration, 2016).
Aside from being in a form of gas, hydrogen sulfide may also exist as a gas, which is compressed to become a liquid. It is commonly found in places which are enclosed and have poor ventilation because it travels along the ground as a result of its heavier weight than air. Some of the common locations of hydrogen sulfide include basements, and sewer lines (Occupational Safety and Health Administration, 2016).
H2S is becoming public concern, especially because enormous number of industries useH2S in their manufacture. Hence, enormous numbers of workers are exposed to it. In this report I am going to thoroughly explain H2S properties, common use of H2S, health effects, and the government regulation of H2S in .
Hydrogen Sulfide (H2S)
Hydrogen sulfide is a colorless, flammable, extremely hazardous gas with a “rotten
egg” smell. Some common names for the gas include sewer gas, stink damp,
swamp gas and manure gas. It occurs naturally in crude petroleum, natural gas,
and hot springs. In addition, hydrogen sulfide is produced by bacterial breakdown
of organic materials and human and animal wastes (e.g., sewage).
Industrial activities that can produce the gas include petroleum/natural gas
drilling and refining, wastewater treatment, coke ovens, tanneries, and kraft
paper mills. Hydrogen sulfide can also exist as a liquid compressed gas.
ChemTox Chemical Research Paper Requirements SFTY 4213.docxchristinemaritza
Chem/Tox
Chemical Research Paper Requirements
SFTY 4213/5213 crn 37012/37013
Block 2, summer 2016
Term Paper Requirements (100 points)
The student will write a research paper on a chemical, or group of
chemicals, that present toxicity to humans. The subject chemical must be
approved by the professor before research can begin.
The paper must include discussions regarding the specific chemical’s
chemical name, physical properties, common uses, exposure limits,
toxicokinetics, acute effects including target organs, chronic effects
including target organs, and protocols for industrial hygiene sampling and
sample analysis.
The term paper must follow APA formatting and style guidelines, and shall
consist of a cover page, table of contents, abstract or executive summary,
body of the paper (not less than 5-7 pages), and a reference list at the end
of the paper. You must cite your sources using Purdue OWL in APA. The
paper must be typed using Arial 12 point. In addition, the term paper must
include:
a. what the chemical is or was used for
b. why is this chemical on the Substance Priority List (SPL)
c. what are the human health, toxicity, and exposure concerns
d. site specific examples that put this chemical on the SPL
e. list and discuss at least one documented case (court
case,EPA,CERCLA, etc.) where this chemical(s) were used
and what happened. Also include: a clearly defined
statement of the situation, an analysis of the risks involved,
and solution(s) to the problem
Structure, presentation, and grammatical accuracy will be considered in
the grading. The term paper is due on or before July 28
th
and must be
submitted through the appropriate drop box. Late papers will not be
accepted.
Darwish 6
Table of Contents
About the Author……………………………………………………………….....2
Introduction……………………………………………………………………......3
H2S Properties……………………………………………………………………..4
Common Use………………………………………………………………………5
Exposure and Health effects…………………………………………………….…6
Government Regulation………………………………………………………...….8
Control Method…………………………………………………………………….9
Case Study………………………………………………………………………….9
Conclusion..……………………………………………………………………….10
Recommendation……………………………………………………………….....10
Work cite……………………………………………………………………...…..11
Appendix……………………………………………………………………...…..12
Introduction
Hydrogen sulfide (H2S) is a gas that naturally occurs in hot springs, crude petroleum, and even natural gas. This gas is usually produced by the breakdown of organic materials commonly found in wastes of human and animals by bacteria. Some of the activities that commonly result to the production of hydrogen sulfide gas include treatment of wastewater, drilling and even refining of petroleum or natural gas (Occupational Safety and Health Administration).
Aside from being in a form of gas, hydrogen sulfide may also exist as a gas, which is compressed to become a liquid. It is commonly found in places which are enclosed and hav ...
FROM NOW I WILL HAVE 2 DISCUSSION EVERY WEEK FOR EACH CLASS AND I .docxhanneloremccaffery
FROM NOW I WILL HAVE 2 DISCUSSION EVERY WEEK FOR EACH CLASS AND I NEED YOUR HELP PLEASE.. THANKS
DISCUSSION Class # 1 / 499
=====================================================================
Week 2 Discussion 1
"Union Pacific Corporation" Please respond to the following:
· Perform an analysis of the social / demographic, technological, economic, environmental / geographic, and political/legal / governmental segments to understand the general environment facing Union Pacific.
· Describe how Union Pacific will be affected by each of these external factors.
Week 2 Discussion 2
"Five Forces of Competition Model" Please respond to the following:
From the e-Activity, analyze the industry you selected using the Five Forces of Competition Model to determine the impact of each of the five forces.
· • Threat of New Entrants
· • Threat of Substitute Products
· • Bargaining Power of Buyers (Customers)
· • Bargaining Power of Suppliers
· • Rivalry Among Competing Firms in an industry
·
Based on your analysis, determine if the industry is attractive or unattractive. Explain your rationale.
===============================================================
DISCUSSION Class # 2 / 409
Week 2 Discussion 1
"Compensation Tactics" Please respond to the following:
· From the e-Activity, determine how the law you researched influences compensation strategies for all companies directly affected by the law in your state. Provide specific examples to support your response.
· Some people say that unions make it more difficult for companies to attain competitive advantage. Explain why you agree or disagree with this statement.
Do Unions Raise Wages? Martocchio_sc7inppt_02.pptx
Week 2 Discussion 2
"Discretionary Employee Benefits" Please respond to the following:
· Analyze the various codes and acts regarding discretionary employee benefits discussed in Chapter 2 and determine which code or law has had the greatest impact on the largest number of organizations. Explain your rationale.
· Building on the same analysis, determine the most likely issue regarding discretionary employee benefits and a likely law that would address the issue. Provide specific examples to support your response.
===================================================================
Bottom of Form
Bottom of Form
Bottom of Form
Bottom of Form
Introduction
Hydrogen sulfide (H2S) is a gas that naturally occurs in hot springs, crude petroleum, and even natural gas. This gas is usually produced by the breakdown of organic materials commonly found in wastes of human and animals by bacteria. Some of the activities that commonly result to the production of hydrogen sulfide gas include treatment of wastewater, drilling and even refining of petroleum or natural gas (Occupational Safety and Health Administration).
Aside from being in a form of gas, hydrogen sulfide may also exist as a gas, which is compressed to become a liquid. It is commonly found in places which ...
Presentation on Chemical Hazards in Industry and protection of workers, diagnosis of adverse health effects. Creating their awareness and guidance to Doctors.
Air pollution; presentation by Subrat, Vishal, Ashley.. Project Guide: Dr. Ta...Dr. Tanuja Nautiyal
Air pollution is the introduction of particulates, biological molecules, or other harmful gases into Earth's atmosphere, causing disease, death to humans, damage to other living organisms such as food crops, or the natural or built environment.
Done By: Diamond Group
School Name: Al Khor Independent School for Girls
Environmental Catalysis Module: Students examines different types of catalytic systems, including heterogeneous and homogeneous catalysis. Depending on the knowledge they gained during activities, the students are then asked to design their projects.
Our Project:The idea of our project is the production of H2SO3 which could be used in different industries.
Concentration Distribution and Ecological Risk Assessment of Polycyclic Aroma...Scientific Review SR
The ecological risk assessment of 16 USEPA priority polycyclic aromatic hydrocarbon (PAHs) in water and sediments of Kolo creek, Niger Delta Nigeria was assessed the samples were collected from November, 2018 to June, 2019 from seven locations (A-G) along the creek. The samples were extracted using standard methods and analyzed using gas chromatography (model: HP5890 S). The concentrations of the PAHs in the water and sediment samples ranged between 0.000 - 9.239 µ/L and .002 – 374.35µg/Kg respectively. All the compounds analyzed were detected in all the sampling places, even area far from the flow stations. Hence, the urban runoffs, sewage discharges, and agricultural activities are implicated. Four rings hydrocarbon were present in higher concentration when compared to other PAHs in all sampling sites, with benz (a)anthracene having the highest values in both matrixes. Similarly, lower molecular weight (LMW) PAHs were present in lower concentrations in all sampling sites and they are known to exhibit higher lethal toxicity than the larger PAHs. HMW were present in high concentrations than LMW and are persistent in the environment as a result of their increase resistance to oxidation, reduction and vaporization as molecular weight increases. Similarly, The PAFs of the investigated creek is less than 5%, suggesting existences of minor ecological risks that are insignificance. However, the TEQs detected in high molecular weight showed that there is possibility of cancer to those who may be exposed to the bottom sediment. The indices measured in this habitat may put more pressures to the aquatic organisms and cause drastic changes to their ecosystem which may lead to species extinction.
Chemical Design, Synthesis and Bio-efficacy Screening of New Growth Inhibitor...CrimsonPublishersACSR
The present work aimed to find new growth inhibitors agents spodoptera littoralis (Boisd.), several
inhibitors structurally relevant to the insect growth regulator, Fenoxycarb and the naturally transpiring
juvenile hormone of insects were chemically designed, prepared and evaluated as anti-proliferative agents.
Epihalohydrins derivatives have been synthesized and their agricultural bio-efficacy as insecticides
against spodoptera littoralis (Boisd.). Insecticidal bio-efficacy data showed that that some compounds are
very active against spodoptera littoralis (Boisd.)
Design, Synthesis and Structural Inspection of Some Novel Di- And Tri-Azometh...CrimsonPublishersACSR
In this study, NBA imine compound was synthesized via an easy one-pot condensation of 3-nitro-benzaldyhide with 2-amino benzoic acid in 1:1 ratio and DAPH imine compound derived from 2,6-diacetyl pyridine and phenyl hydrazine hydrochloride. Consequences of the newly synthesized compounds
hooked up with the aid of FT-IR, elemental analyses, 13C-NMR ,1H-NMR and digital spectral research.
Experiments had been consistent with their chemical structures. Theoretical DFT calculations had been
implemented to confirm the molecular geometry of the investigated chemo-sensors. The sensor property
of all organized imines had been tested upon addition of the metal ions, consisting of Cr(III) ,Fe(II) ,Co(II) ,
Ni(II) ,Cu(II) ,Zn(II) ,Mn(II), VO(II) and Pd(II) .The interactions among receptors and ions are effortlessly
monitored with the aid of UV-visible spectroscopy. DAPH receptor confirmed color modification from
blood red to excessive deep green color to Co(II) ,a yellow color to Cu(II) and different colors to different
ions. Where the NBA receptor showed color modification from light yellow to excessive deep orange color
to Fe(II), pale orange to Pd(II) and different colors for other ions.
More Related Content
Similar to Toxicity Alert: Hydrogen Sulfide_Crimson Publishers
Air pollution; presentation by Subrat, Vishal, Ashley.. Project Guide: Dr. Ta...Dr. Tanuja Nautiyal
Air pollution is the introduction of particulates, biological molecules, or other harmful gases into Earth's atmosphere, causing disease, death to humans, damage to other living organisms such as food crops, or the natural or built environment.
Done By: Diamond Group
School Name: Al Khor Independent School for Girls
Environmental Catalysis Module: Students examines different types of catalytic systems, including heterogeneous and homogeneous catalysis. Depending on the knowledge they gained during activities, the students are then asked to design their projects.
Our Project:The idea of our project is the production of H2SO3 which could be used in different industries.
Concentration Distribution and Ecological Risk Assessment of Polycyclic Aroma...Scientific Review SR
The ecological risk assessment of 16 USEPA priority polycyclic aromatic hydrocarbon (PAHs) in water and sediments of Kolo creek, Niger Delta Nigeria was assessed the samples were collected from November, 2018 to June, 2019 from seven locations (A-G) along the creek. The samples were extracted using standard methods and analyzed using gas chromatography (model: HP5890 S). The concentrations of the PAHs in the water and sediment samples ranged between 0.000 - 9.239 µ/L and .002 – 374.35µg/Kg respectively. All the compounds analyzed were detected in all the sampling places, even area far from the flow stations. Hence, the urban runoffs, sewage discharges, and agricultural activities are implicated. Four rings hydrocarbon were present in higher concentration when compared to other PAHs in all sampling sites, with benz (a)anthracene having the highest values in both matrixes. Similarly, lower molecular weight (LMW) PAHs were present in lower concentrations in all sampling sites and they are known to exhibit higher lethal toxicity than the larger PAHs. HMW were present in high concentrations than LMW and are persistent in the environment as a result of their increase resistance to oxidation, reduction and vaporization as molecular weight increases. Similarly, The PAFs of the investigated creek is less than 5%, suggesting existences of minor ecological risks that are insignificance. However, the TEQs detected in high molecular weight showed that there is possibility of cancer to those who may be exposed to the bottom sediment. The indices measured in this habitat may put more pressures to the aquatic organisms and cause drastic changes to their ecosystem which may lead to species extinction.
Chemical Design, Synthesis and Bio-efficacy Screening of New Growth Inhibitor...CrimsonPublishersACSR
The present work aimed to find new growth inhibitors agents spodoptera littoralis (Boisd.), several
inhibitors structurally relevant to the insect growth regulator, Fenoxycarb and the naturally transpiring
juvenile hormone of insects were chemically designed, prepared and evaluated as anti-proliferative agents.
Epihalohydrins derivatives have been synthesized and their agricultural bio-efficacy as insecticides
against spodoptera littoralis (Boisd.). Insecticidal bio-efficacy data showed that that some compounds are
very active against spodoptera littoralis (Boisd.)
Design, Synthesis and Structural Inspection of Some Novel Di- And Tri-Azometh...CrimsonPublishersACSR
In this study, NBA imine compound was synthesized via an easy one-pot condensation of 3-nitro-benzaldyhide with 2-amino benzoic acid in 1:1 ratio and DAPH imine compound derived from 2,6-diacetyl pyridine and phenyl hydrazine hydrochloride. Consequences of the newly synthesized compounds
hooked up with the aid of FT-IR, elemental analyses, 13C-NMR ,1H-NMR and digital spectral research.
Experiments had been consistent with their chemical structures. Theoretical DFT calculations had been
implemented to confirm the molecular geometry of the investigated chemo-sensors. The sensor property
of all organized imines had been tested upon addition of the metal ions, consisting of Cr(III) ,Fe(II) ,Co(II) ,
Ni(II) ,Cu(II) ,Zn(II) ,Mn(II), VO(II) and Pd(II) .The interactions among receptors and ions are effortlessly
monitored with the aid of UV-visible spectroscopy. DAPH receptor confirmed color modification from
blood red to excessive deep green color to Co(II) ,a yellow color to Cu(II) and different colors to different
ions. Where the NBA receptor showed color modification from light yellow to excessive deep orange color
to Fe(II), pale orange to Pd(II) and different colors for other ions.
Azomethine Metal Chelates as an Efficient Catalyst for Oxidation of Organic C...CrimsonPublishersACSR
Azomethine ligands and their metal chelates are flexible compounds synthesized from the condensation
of an amino compound with carbonyl compounds and extensively used for industrial purposes and also
show a broad range of biological efficiencies including antibacterial, antifungal, antiviral, antimalarial,
antiproliferative, anti-inflammatory, anticancer, anti-HIV, anthelminthic and antipyretic properties.
Azomethine metal chelates show excellent catalytic activity in diversity reactions. Over the past few
years, there have been many reports on their applications in homogeneous and heterogeneous catalysis.
The high thermal and moisture stabilities of many azomethine metal chelates were useful attributes for
their application as catalysts in reactions involving at high temperatures. Recent researches in oxidation
catalysis have focused on how to employ the metal-catalyzed oxidation of organic substrates. This review
concerns with the current developments for the oxidations of organic compounds.
With the objective of analyzing metal ions simultaneously in several samples which can be applied in
various areas, electrochemical methods based on anodic stripping voltammetry are prominent due to
the fact that their analytical performance can be increased by electrode modifications. The development
of electrodes and methods together with the availability of small and low cost instrument would be
beneficial for onsite analysis and makes it much more practical.
Study of Temporal Trends of Pollution in the Russian Coastal Areas of the Bla...CrimsonPublishersACSR
Study of Temporal Trends of Pollution in the Russian Coastal Areas of the Black Sea by Nuclear and Related Analytical Techniques by Frontasyeva MV in Annals of Chemical Science Research
Botanic, Phytochemistry and Pharmacological Aspects of Phyllanthus Amarus Sch...CrimsonPublishersACSR
Botanic, Phytochemistry and Pharmacological Aspects of Phyllanthus Amarus Schum & Thorn as Powerful Tools to Improve its Biotechnological Studies by Maria Aparecida MM in Annals of Chemical Science Research
Properties of Zinc Phosphate Coatings on Carbon Steel Using a Thermostatic Ce...CrimsonPublishersACSR
Properties of Zinc Phosphate Coatings on Carbon Steel Using a Thermostatic Cell and a Mobile System by Reyes Astivia MJE, Torres JV*, Barrera GM and Díaz CB in Annals of Chemical Science Research
Characterization of Rubber Seed Shell and Kernel (Hevea brasiliensis) as Raw ...CrimsonPublishersACSR
Characterization of Rubber Seed Shell and Kernel
(Hevea brasiliensis) as Raw Materials for Coliquefaction with Low Rank Coal by Mohd Azlan Mohd Ishak*, Siti Nur Ain Mohd Hassan, Ali H Jawad and Khudzir Ismail in Annals of Chemical Science Research
The increased availability of biomedical data, particularly in the public domain, offers the opportunity to better understand human health and to develop effective therapeutics for a wide range of unmet medical needs. However, data scientists remain stymied by the fact that data remain hard to find and to productively reuse because data and their metadata i) are wholly inaccessible, ii) are in non-standard or incompatible representations, iii) do not conform to community standards, and iv) have unclear or highly restricted terms and conditions that preclude legitimate reuse. These limitations require a rethink on data can be made machine and AI-ready - the key motivation behind the FAIR Guiding Principles. Concurrently, while recent efforts have explored the use of deep learning to fuse disparate data into predictive models for a wide range of biomedical applications, these models often fail even when the correct answer is already known, and fail to explain individual predictions in terms that data scientists can appreciate. These limitations suggest that new methods to produce practical artificial intelligence are still needed.
In this talk, I will discuss our work in (1) building an integrative knowledge infrastructure to prepare FAIR and "AI-ready" data and services along with (2) neurosymbolic AI methods to improve the quality of predictions and to generate plausible explanations. Attention is given to standards, platforms, and methods to wrangle knowledge into simple, but effective semantic and latent representations, and to make these available into standards-compliant and discoverable interfaces that can be used in model building, validation, and explanation. Our work, and those of others in the field, creates a baseline for building trustworthy and easy to deploy AI models in biomedicine.
Bio
Dr. Michel Dumontier is the Distinguished Professor of Data Science at Maastricht University, founder and executive director of the Institute of Data Science, and co-founder of the FAIR (Findable, Accessible, Interoperable and Reusable) data principles. His research explores socio-technological approaches for responsible discovery science, which includes collaborative multi-modal knowledge graphs, privacy-preserving distributed data mining, and AI methods for drug discovery and personalized medicine. His work is supported through the Dutch National Research Agenda, the Netherlands Organisation for Scientific Research, Horizon Europe, the European Open Science Cloud, the US National Institutes of Health, and a Marie-Curie Innovative Training Network. He is the editor-in-chief for the journal Data Science and is internationally recognized for his contributions in bioinformatics, biomedical informatics, and semantic technologies including ontologies and linked data.
Cancer cell metabolism: special Reference to Lactate PathwayAADYARAJPANDEY1
Normal Cell Metabolism:
Cellular respiration describes the series of steps that cells use to break down sugar and other chemicals to get the energy we need to function.
Energy is stored in the bonds of glucose and when glucose is broken down, much of that energy is released.
Cell utilize energy in the form of ATP.
The first step of respiration is called glycolysis. In a series of steps, glycolysis breaks glucose into two smaller molecules - a chemical called pyruvate. A small amount of ATP is formed during this process.
Most healthy cells continue the breakdown in a second process, called the Kreb's cycle. The Kreb's cycle allows cells to “burn” the pyruvates made in glycolysis to get more ATP.
The last step in the breakdown of glucose is called oxidative phosphorylation (Ox-Phos).
It takes place in specialized cell structures called mitochondria. This process produces a large amount of ATP. Importantly, cells need oxygen to complete oxidative phosphorylation.
If a cell completes only glycolysis, only 2 molecules of ATP are made per glucose. However, if the cell completes the entire respiration process (glycolysis - Kreb's - oxidative phosphorylation), about 36 molecules of ATP are created, giving it much more energy to use.
IN CANCER CELL:
Unlike healthy cells that "burn" the entire molecule of sugar to capture a large amount of energy as ATP, cancer cells are wasteful.
Cancer cells only partially break down sugar molecules. They overuse the first step of respiration, glycolysis. They frequently do not complete the second step, oxidative phosphorylation.
This results in only 2 molecules of ATP per each glucose molecule instead of the 36 or so ATPs healthy cells gain. As a result, cancer cells need to use a lot more sugar molecules to get enough energy to survive.
Unlike healthy cells that "burn" the entire molecule of sugar to capture a large amount of energy as ATP, cancer cells are wasteful.
Cancer cells only partially break down sugar molecules. They overuse the first step of respiration, glycolysis. They frequently do not complete the second step, oxidative phosphorylation.
This results in only 2 molecules of ATP per each glucose molecule instead of the 36 or so ATPs healthy cells gain. As a result, cancer cells need to use a lot more sugar molecules to get enough energy to survive.
introduction to WARBERG PHENOMENA:
WARBURG EFFECT Usually, cancer cells are highly glycolytic (glucose addiction) and take up more glucose than do normal cells from outside.
Otto Heinrich Warburg (; 8 October 1883 – 1 August 1970) In 1931 was awarded the Nobel Prize in Physiology for his "discovery of the nature and mode of action of the respiratory enzyme.
WARNBURG EFFECT : cancer cells under aerobic (well-oxygenated) conditions to metabolize glucose to lactate (aerobic glycolysis) is known as the Warburg effect. Warburg made the observation that tumor slices consume glucose and secrete lactate at a higher rate than normal tissues.
A brief information about the SCOP protein database used in bioinformatics.
The Structural Classification of Proteins (SCOP) database is a comprehensive and authoritative resource for the structural and evolutionary relationships of proteins. It provides a detailed and curated classification of protein structures, grouping them into families, superfamilies, and folds based on their structural and sequence similarities.
Slide 1: Title Slide
Extrachromosomal Inheritance
Slide 2: Introduction to Extrachromosomal Inheritance
Definition: Extrachromosomal inheritance refers to the transmission of genetic material that is not found within the nucleus.
Key Components: Involves genes located in mitochondria, chloroplasts, and plasmids.
Slide 3: Mitochondrial Inheritance
Mitochondria: Organelles responsible for energy production.
Mitochondrial DNA (mtDNA): Circular DNA molecule found in mitochondria.
Inheritance Pattern: Maternally inherited, meaning it is passed from mothers to all their offspring.
Diseases: Examples include Leber’s hereditary optic neuropathy (LHON) and mitochondrial myopathy.
Slide 4: Chloroplast Inheritance
Chloroplasts: Organelles responsible for photosynthesis in plants.
Chloroplast DNA (cpDNA): Circular DNA molecule found in chloroplasts.
Inheritance Pattern: Often maternally inherited in most plants, but can vary in some species.
Examples: Variegation in plants, where leaf color patterns are determined by chloroplast DNA.
Slide 5: Plasmid Inheritance
Plasmids: Small, circular DNA molecules found in bacteria and some eukaryotes.
Features: Can carry antibiotic resistance genes and can be transferred between cells through processes like conjugation.
Significance: Important in biotechnology for gene cloning and genetic engineering.
Slide 6: Mechanisms of Extrachromosomal Inheritance
Non-Mendelian Patterns: Do not follow Mendel’s laws of inheritance.
Cytoplasmic Segregation: During cell division, organelles like mitochondria and chloroplasts are randomly distributed to daughter cells.
Heteroplasmy: Presence of more than one type of organellar genome within a cell, leading to variation in expression.
Slide 7: Examples of Extrachromosomal Inheritance
Four O’clock Plant (Mirabilis jalapa): Shows variegated leaves due to different cpDNA in leaf cells.
Petite Mutants in Yeast: Result from mutations in mitochondrial DNA affecting respiration.
Slide 8: Importance of Extrachromosomal Inheritance
Evolution: Provides insight into the evolution of eukaryotic cells.
Medicine: Understanding mitochondrial inheritance helps in diagnosing and treating mitochondrial diseases.
Agriculture: Chloroplast inheritance can be used in plant breeding and genetic modification.
Slide 9: Recent Research and Advances
Gene Editing: Techniques like CRISPR-Cas9 are being used to edit mitochondrial and chloroplast DNA.
Therapies: Development of mitochondrial replacement therapy (MRT) for preventing mitochondrial diseases.
Slide 10: Conclusion
Summary: Extrachromosomal inheritance involves the transmission of genetic material outside the nucleus and plays a crucial role in genetics, medicine, and biotechnology.
Future Directions: Continued research and technological advancements hold promise for new treatments and applications.
Slide 11: Questions and Discussion
Invite Audience: Open the floor for any questions or further discussion on the topic.
Observation of Io’s Resurfacing via Plume Deposition Using Ground-based Adapt...Sérgio Sacani
Since volcanic activity was first discovered on Io from Voyager images in 1979, changes
on Io’s surface have been monitored from both spacecraft and ground-based telescopes.
Here, we present the highest spatial resolution images of Io ever obtained from a groundbased telescope. These images, acquired by the SHARK-VIS instrument on the Large
Binocular Telescope, show evidence of a major resurfacing event on Io’s trailing hemisphere. When compared to the most recent spacecraft images, the SHARK-VIS images
show that a plume deposit from a powerful eruption at Pillan Patera has covered part
of the long-lived Pele plume deposit. Although this type of resurfacing event may be common on Io, few have been detected due to the rarity of spacecraft visits and the previously low spatial resolution available from Earth-based telescopes. The SHARK-VIS instrument ushers in a new era of high resolution imaging of Io’s surface using adaptive
optics at visible wavelengths.
Multi-source connectivity as the driver of solar wind variability in the heli...Sérgio Sacani
The ambient solar wind that flls the heliosphere originates from multiple
sources in the solar corona and is highly structured. It is often described
as high-speed, relatively homogeneous, plasma streams from coronal
holes and slow-speed, highly variable, streams whose source regions are
under debate. A key goal of ESA/NASA’s Solar Orbiter mission is to identify
solar wind sources and understand what drives the complexity seen in the
heliosphere. By combining magnetic feld modelling and spectroscopic
techniques with high-resolution observations and measurements, we show
that the solar wind variability detected in situ by Solar Orbiter in March
2022 is driven by spatio-temporal changes in the magnetic connectivity to
multiple sources in the solar atmosphere. The magnetic feld footpoints
connected to the spacecraft moved from the boundaries of a coronal hole
to one active region (12961) and then across to another region (12957). This
is refected in the in situ measurements, which show the transition from fast
to highly Alfvénic then to slow solar wind that is disrupted by the arrival of
a coronal mass ejection. Our results describe solar wind variability at 0.5 au
but are applicable to near-Earth observatories.
1. Toxicity Alert: Hydrogen Sulfide
Pipat Chooto*
Department of Chemistry, Faculty of Science, Prince of Songkla University, Thailand
Introduction
The way that there are greater and greater number of industrial factories especially
petroleum and rubber together with greater amount of wastewater, garbage and pollution
causes casualty loss as well as health problems repeatedly. Lately in southern Thailand,
there is the case that workers did their jobs in wastewater treatment areas, causing loss
of consciousness, serious harm and death due to hydrogen sulfide [1]. Therefore, greater
recognition and awareness of this gas are essential which can lead to the prevention as well
as careful plan for the operation to make it safer for life in the future.
H2
S properties
Hydrogen sulfide is the compound of hydrogen and sulfur with the chemical formula of
H2
S, similar to water (H2
O) so it can dissolve in water very well. It is colorless with the odor of
rotten eggs and greater density than air. After contact, the olfactory reception is paralyzed and
cannot sense the gas any more, intensifying its toxicity [2]. The gas can be found everywhere
in this whole wide world. It is toxic, corrosive, flammable and acidic when dissolving in water.
For reading convenience, H2
S is used instead of hydrogen sulfide from this point on.
H2
S sources
In nature, hydrogen sulfide is found in great percentage in natural gas. It is obtained from
volcano eruption and deserted wells. By chemical reactions, it can be formed by the reaction
of hydrogen and sulfur at high pressure and temperature, the reactions of sulfide compounds
with acids and the decomposition of certain sulfur compounds such as thioacetamide
(CH3
CSNH2
). For the waste from communities or factories, it arises from the digestion by
anaerobic bacteria which are normally bacteria consuming sulfate to get energy.
Existence in environment
For natural environment, due to the fact that the process of becoming fuel source involves
sulfur, H2
S can be found in various areas. Not large amount is found in petroleum and
petroleum products. In contrast, it can be found at high concentration up to 90% in natural
gas. It can also move from underground to the surface via volcano and hot or cold spring.
And because of bacteria, deserted wells can also be filled with H2
S. Finally, smaller amount of
hydrogen sulfide can be formed in specific organs of human and animal bodies, mainly mouth
and intestine, by the decomposition of proteins by bacteria.
In the case of industrial environment, H2
S can be found in petroleum distillation from
the reactions to remove sulfur. A number of industries that give away H2
S to the environment
include coal burning, paper mills, tanning, sewerage and mining among others. The way that
sulfur is left to react with organic matters at high temperature can also lead to the formation
of H2
S by bacterial decomposition. Finally, oil drilling can cause the releasing of this gas to the
Crimson Publishers
Wings to the Research
Mini Review
*Corresponding author: Pipat Chooto,
Department of Chemistry, Faculty of
Science, Prince of Songkla University,
Thailand
Submission: September 02, 2019
Published: September 06, 2019
Volume 1 - Issue 4
How to cite this article: Pipat Chooto.
Toxicity Alert: Hydrogen Sulfide. Ann
Chem Sci Res. 1(4).ACSR.000519.2019.
DOI: 10.31031/ACSR.2019.01.000519
Copyright@ Pipat Chooto, This article is
distributed under the terms of the Creative
Commons Attribution 4.0 International
License, which permits unrestricted use
and redistribution provided that the
original author and source are credited.
1
Annals of Chemical Science Research
Abstract
Recent cases of casualty of workers in rubber latex factories due to hydrogen sulfide call for urgent
attention to better understanding, prevention of damages in working and living in risky environments,
and promotion of public and labor awareness. Specific responsible organization here is the subcontractor
of latex factories. H2
S characteristics, sources and symptoms from exposure are emphasized. Proper
practice should be followed strictly along with better cooperation among experts for the main objective
in saving lives and greater safety in living and working.
Keyword: Industrial pollutants; Casualty from toxic gases; Toxicity awareness; Cooperations and practice
for gas safety; Environmental pollutants
ISSN : 2688-8394