This document discusses the hazards of silica dust exposure and preventative measures. It notes that over one million workers are exposed to dangerous levels of silica dust each year in jobs like drilling, crushing, and sandblasting. Prolonged exposure can lead to silicosis, a serious lung disease, and increase risk of tuberculosis and lung cancer. The document recommends evaluating exposures through inspections, monitoring, and observing work practices. It emphasizes controlling dust at its source through engineering controls like dust collectors, enclosed cabs, water sprays and HEPA filters to reduce silica exposures below the permissible exposure limit.
What are the possible exposure sources?
Crystalline silica can be found in certain types of natural materials, such as:
• Sand
• Soil and rock
• Gravel
• Sandstone
• Slate
• Granite
• Clay
Global Road Technology are silica dust control specialists servicing the mining, construction, renewables, quarrying and oil and gas industries. Dealing with silica dust at its source takes specific understanding of the particle size of silica dust in relation to the dust control product used. GRT has a range of different silica dust control products that can be utilized during activities such as drill and blast, tunneling, underground mining, stockpiling, transportation, haul roads, conveyor belt and transfer points amongst many other areas of application. Silica dust related terminology can be very confusing! There are must-know terms related to silica dust and these often find themselves being interchanged or misplaced in the thick of things.
Silica dust related terminology can be very confusing! There are must-know terms related to silica dust and these often find themselves being interchanged or misplaced in the thick of things.
What are the possible exposure sources?
Crystalline silica can be found in certain types of natural materials, such as:
• Sand
• Soil and rock
• Gravel
• Sandstone
• Slate
• Granite
• Clay
Global Road Technology are silica dust control specialists servicing the mining, construction, renewables, quarrying and oil and gas industries. Dealing with silica dust at its source takes specific understanding of the particle size of silica dust in relation to the dust control product used. GRT has a range of different silica dust control products that can be utilized during activities such as drill and blast, tunneling, underground mining, stockpiling, transportation, haul roads, conveyor belt and transfer points amongst many other areas of application. Silica dust related terminology can be very confusing! There are must-know terms related to silica dust and these often find themselves being interchanged or misplaced in the thick of things.
Silica dust related terminology can be very confusing! There are must-know terms related to silica dust and these often find themselves being interchanged or misplaced in the thick of things.
tRÍPF SÄFETYPROteduce your workers Yisk oí exposure to si.docxwillcoxjanay
tRÍPF SÄFETYPRO
teduce your workers' Yisk oí exposure to silica dust.
Silicosis. Ifs a disabling and often
fatal disease that can strike land-
scape cjie;^ members, even those
laridscáplé^l
unaware of the hazards of crystalline
silica dust and how to protect their
workers.
Silicosis, which often has no symp-
toms in its early stages, develops as a
result of inhaling dust containing tiny
particles of crystalline silica. Crystalline
silica, which is a major part of the
earth's crust, can be found in many
materials at landscape construction
sites. Among these are soil, sand, brick,
block, mortar and concrete. Other
materials containing silica that may be
present at general construction sites
where your crews are working include
cement board, roofing aggregate, and
some drywall joint compounds.
Although there is no
cure for silicosis, there
are steps landscape
contractors and crew
members can take
to reduce the risk of
developing this disease.
Your crew members may be breath-
ing in harmful silica dust and not even
know it. That's because the small parti-
cles of crystalline silica that get into the
air are often not visible—and it can take
20 years or longer for the chronic form
of silicosis to develop. In the meantime,
though, as a crew member inhales the
dust, silica particles can scar the lungs,
causing the disabling, irreversible and
incurable lung disease called silicosis.
The presence of silica in the lungs
can also weaken the body's ability to
fight infections, so infectious illnesses
such as pulmonary tuberculosis can
lung cancer and chronic obstructive
pulmonary disease, and may be related
to kidney disease and other adverse
health effects.
Silicosis is a progressive disease, so
removing a worker from the job does
not stop its progression. As silicosis
progresses, symptoms may include
severe cough, chest pains, weight loss,
fever, weakness, night sweats, short-
ness of breath, respiratory failure and/or
death. (See "Resources for Employers"
on page 26 for a link to the National
Institute for Occupational Safety
and Health (NIOSH) Health Hazard
Review: Health Effects of Occupational
Exposure to Respirable Crystalline
Silica, where you can learn about other
adverse health effects of occupational
crystalline silica exposure.)
Risky tasks
Certain tasks performed by land-
scape crew members may generate crys-
talline silica dust. Among these are:
• Loading, hauling and dumping rock
• Chipping, hammering, drilling, saw-
ing and grinding concrete or masonry
• Grinding mortar
• Demolishing concrete or masonry
structures
• Abrasive blasting (using sand as the
abrasive or where the blasted surface
contains silica, such as concrete)
• Dry sweeping or pressurized air
blowing (concrete or dust)
• Using a jackhammer or chipper
• Using such mobile excavation equip-
ment as a skid-steer loader, grader,
bulldozer or truck
Specific jobs your crew members
may be performing that co ...
Occupational lungs disease: It contains Asbestosis, Silicosis, Coal miner’s lung/coal worker’s, pneumoconiosis, Bagasosis, Bysinosis
and their nursing management and prevention.
tRÍPF SÄFETYPROteduce your workers Yisk oí exposure to si.docxwillcoxjanay
tRÍPF SÄFETYPRO
teduce your workers' Yisk oí exposure to silica dust.
Silicosis. Ifs a disabling and often
fatal disease that can strike land-
scape cjie;^ members, even those
laridscáplé^l
unaware of the hazards of crystalline
silica dust and how to protect their
workers.
Silicosis, which often has no symp-
toms in its early stages, develops as a
result of inhaling dust containing tiny
particles of crystalline silica. Crystalline
silica, which is a major part of the
earth's crust, can be found in many
materials at landscape construction
sites. Among these are soil, sand, brick,
block, mortar and concrete. Other
materials containing silica that may be
present at general construction sites
where your crews are working include
cement board, roofing aggregate, and
some drywall joint compounds.
Although there is no
cure for silicosis, there
are steps landscape
contractors and crew
members can take
to reduce the risk of
developing this disease.
Your crew members may be breath-
ing in harmful silica dust and not even
know it. That's because the small parti-
cles of crystalline silica that get into the
air are often not visible—and it can take
20 years or longer for the chronic form
of silicosis to develop. In the meantime,
though, as a crew member inhales the
dust, silica particles can scar the lungs,
causing the disabling, irreversible and
incurable lung disease called silicosis.
The presence of silica in the lungs
can also weaken the body's ability to
fight infections, so infectious illnesses
such as pulmonary tuberculosis can
lung cancer and chronic obstructive
pulmonary disease, and may be related
to kidney disease and other adverse
health effects.
Silicosis is a progressive disease, so
removing a worker from the job does
not stop its progression. As silicosis
progresses, symptoms may include
severe cough, chest pains, weight loss,
fever, weakness, night sweats, short-
ness of breath, respiratory failure and/or
death. (See "Resources for Employers"
on page 26 for a link to the National
Institute for Occupational Safety
and Health (NIOSH) Health Hazard
Review: Health Effects of Occupational
Exposure to Respirable Crystalline
Silica, where you can learn about other
adverse health effects of occupational
crystalline silica exposure.)
Risky tasks
Certain tasks performed by land-
scape crew members may generate crys-
talline silica dust. Among these are:
• Loading, hauling and dumping rock
• Chipping, hammering, drilling, saw-
ing and grinding concrete or masonry
• Grinding mortar
• Demolishing concrete or masonry
structures
• Abrasive blasting (using sand as the
abrasive or where the blasted surface
contains silica, such as concrete)
• Dry sweeping or pressurized air
blowing (concrete or dust)
• Using a jackhammer or chipper
• Using such mobile excavation equip-
ment as a skid-steer loader, grader,
bulldozer or truck
Specific jobs your crew members
may be performing that co ...
Occupational lungs disease: It contains Asbestosis, Silicosis, Coal miner’s lung/coal worker’s, pneumoconiosis, Bagasosis, Bysinosis
and their nursing management and prevention.
Ozempic: Preoperative Management of Patients on GLP-1 Receptor Agonists Saeid Safari
Preoperative Management of Patients on GLP-1 Receptor Agonists like Ozempic and Semiglutide
ASA GUIDELINE
NYSORA Guideline
2 Case Reports of Gastric Ultrasound
NVBDCP.pptx Nation vector borne disease control programSapna Thakur
NVBDCP was launched in 2003-2004 . Vector-Borne Disease: Disease that results from an infection transmitted to humans and other animals by blood-feeding arthropods, such as mosquitoes, ticks, and fleas. Examples of vector-borne diseases include Dengue fever, West Nile Virus, Lyme disease, and malaria.
Lung Cancer: Artificial Intelligence, Synergetics, Complex System Analysis, S...Oleg Kshivets
RESULTS: Overall life span (LS) was 2252.1±1742.5 days and cumulative 5-year survival (5YS) reached 73.2%, 10 years – 64.8%, 20 years – 42.5%. 513 LCP lived more than 5 years (LS=3124.6±1525.6 days), 148 LCP – more than 10 years (LS=5054.4±1504.1 days).199 LCP died because of LC (LS=562.7±374.5 days). 5YS of LCP after bi/lobectomies was significantly superior in comparison with LCP after pneumonectomies (78.1% vs.63.7%, P=0.00001 by log-rank test). AT significantly improved 5YS (66.3% vs. 34.8%) (P=0.00000 by log-rank test) only for LCP with N1-2. Cox modeling displayed that 5YS of LCP significantly depended on: phase transition (PT) early-invasive LC in terms of synergetics, PT N0—N12, cell ratio factors (ratio between cancer cells- CC and blood cells subpopulations), G1-3, histology, glucose, AT, blood cell circuit, prothrombin index, heparin tolerance, recalcification time (P=0.000-0.038). Neural networks, genetic algorithm selection and bootstrap simulation revealed relationships between 5YS and PT early-invasive LC (rank=1), PT N0—N12 (rank=2), thrombocytes/CC (3), erythrocytes/CC (4), eosinophils/CC (5), healthy cells/CC (6), lymphocytes/CC (7), segmented neutrophils/CC (8), stick neutrophils/CC (9), monocytes/CC (10); leucocytes/CC (11). Correct prediction of 5YS was 100% by neural networks computing (area under ROC curve=1.0; error=0.0).
CONCLUSIONS: 5YS of LCP after radical procedures significantly depended on: 1) PT early-invasive cancer; 2) PT N0--N12; 3) cell ratio factors; 4) blood cell circuit; 5) biochemical factors; 6) hemostasis system; 7) AT; 8) LC characteristics; 9) LC cell dynamics; 10) surgery type: lobectomy/pneumonectomy; 11) anthropometric data. Optimal diagnosis and treatment strategies for LC are: 1) screening and early detection of LC; 2) availability of experienced thoracic surgeons because of complexity of radical procedures; 3) aggressive en block surgery and adequate lymph node dissection for completeness; 4) precise prediction; 5) adjuvant chemoimmunoradiotherapy for LCP with unfavorable prognosis.
The prostate is an exocrine gland of the male mammalian reproductive system
It is a walnut-sized gland that forms part of the male reproductive system and is located in front of the rectum and just below the urinary bladder
Function is to store and secrete a clear, slightly alkaline fluid that constitutes 10-30% of the volume of the seminal fluid that along with the spermatozoa, constitutes semen
A healthy human prostate measures (4cm-vertical, by 3cm-horizontal, 2cm ant-post ).
It surrounds the urethra just below the urinary bladder. It has anterior, median, posterior and two lateral lobes
It’s work is regulated by androgens which are responsible for male sex characteristics
Generalised disease of the prostate due to hormonal derangement which leads to non malignant enlargement of the gland (increase in the number of epithelial cells and stromal tissue)to cause compression of the urethra leading to symptoms (LUTS
Title: Sense of Taste
Presenter: Dr. Faiza, Assistant Professor of Physiology
Qualifications:
MBBS (Best Graduate, AIMC Lahore)
FCPS Physiology
ICMT, CHPE, DHPE (STMU)
MPH (GC University, Faisalabad)
MBA (Virtual University of Pakistan)
Learning Objectives:
Describe the structure and function of taste buds.
Describe the relationship between the taste threshold and taste index of common substances.
Explain the chemical basis and signal transduction of taste perception for each type of primary taste sensation.
Recognize different abnormalities of taste perception and their causes.
Key Topics:
Significance of Taste Sensation:
Differentiation between pleasant and harmful food
Influence on behavior
Selection of food based on metabolic needs
Receptors of Taste:
Taste buds on the tongue
Influence of sense of smell, texture of food, and pain stimulation (e.g., by pepper)
Primary and Secondary Taste Sensations:
Primary taste sensations: Sweet, Sour, Salty, Bitter, Umami
Chemical basis and signal transduction mechanisms for each taste
Taste Threshold and Index:
Taste threshold values for Sweet (sucrose), Salty (NaCl), Sour (HCl), and Bitter (Quinine)
Taste index relationship: Inversely proportional to taste threshold
Taste Blindness:
Inability to taste certain substances, particularly thiourea compounds
Example: Phenylthiocarbamide
Structure and Function of Taste Buds:
Composition: Epithelial cells, Sustentacular/Supporting cells, Taste cells, Basal cells
Features: Taste pores, Taste hairs/microvilli, and Taste nerve fibers
Location of Taste Buds:
Found in papillae of the tongue (Fungiform, Circumvallate, Foliate)
Also present on the palate, tonsillar pillars, epiglottis, and proximal esophagus
Mechanism of Taste Stimulation:
Interaction of taste substances with receptors on microvilli
Signal transduction pathways for Umami, Sweet, Bitter, Sour, and Salty tastes
Taste Sensitivity and Adaptation:
Decrease in sensitivity with age
Rapid adaptation of taste sensation
Role of Saliva in Taste:
Dissolution of tastants to reach receptors
Washing away the stimulus
Taste Preferences and Aversions:
Mechanisms behind taste preference and aversion
Influence of receptors and neural pathways
Impact of Sensory Nerve Damage:
Degeneration of taste buds if the sensory nerve fiber is cut
Abnormalities of Taste Detection:
Conditions: Ageusia, Hypogeusia, Dysgeusia (parageusia)
Causes: Nerve damage, neurological disorders, infections, poor oral hygiene, adverse drug effects, deficiencies, aging, tobacco use, altered neurotransmitter levels
Neurotransmitters and Taste Threshold:
Effects of serotonin (5-HT) and norepinephrine (NE) on taste sensitivity
Supertasters:
25% of the population with heightened sensitivity to taste, especially bitterness
Increased number of fungiform papillae
Recomendações da OMS sobre cuidados maternos e neonatais para uma experiência pós-natal positiva.
Em consonância com os ODS – Objetivos do Desenvolvimento Sustentável e a Estratégia Global para a Saúde das Mulheres, Crianças e Adolescentes, e aplicando uma abordagem baseada nos direitos humanos, os esforços de cuidados pós-natais devem expandir-se para além da cobertura e da simples sobrevivência, de modo a incluir cuidados de qualidade.
Estas diretrizes visam melhorar a qualidade dos cuidados pós-natais essenciais e de rotina prestados às mulheres e aos recém-nascidos, com o objetivo final de melhorar a saúde e o bem-estar materno e neonatal.
Uma “experiência pós-natal positiva” é um resultado importante para todas as mulheres que dão à luz e para os seus recém-nascidos, estabelecendo as bases para a melhoria da saúde e do bem-estar a curto e longo prazo. Uma experiência pós-natal positiva é definida como aquela em que as mulheres, pessoas que gestam, os recém-nascidos, os casais, os pais, os cuidadores e as famílias recebem informação consistente, garantia e apoio de profissionais de saúde motivados; e onde um sistema de saúde flexível e com recursos reconheça as necessidades das mulheres e dos bebês e respeite o seu contexto cultural.
Estas diretrizes consolidadas apresentam algumas recomendações novas e já bem fundamentadas sobre cuidados pós-natais de rotina para mulheres e neonatos que recebem cuidados no pós-parto em unidades de saúde ou na comunidade, independentemente dos recursos disponíveis.
É fornecido um conjunto abrangente de recomendações para cuidados durante o período puerperal, com ênfase nos cuidados essenciais que todas as mulheres e recém-nascidos devem receber, e com a devida atenção à qualidade dos cuidados; isto é, a entrega e a experiência do cuidado recebido. Estas diretrizes atualizam e ampliam as recomendações da OMS de 2014 sobre cuidados pós-natais da mãe e do recém-nascido e complementam as atuais diretrizes da OMS sobre a gestão de complicações pós-natais.
O estabelecimento da amamentação e o manejo das principais intercorrências é contemplada.
Recomendamos muito.
Vamos discutir essas recomendações no nosso curso de pós-graduação em Aleitamento no Instituto Ciclos.
Esta publicação só está disponível em inglês até o momento.
Prof. Marcus Renato de Carvalho
www.agostodourado.com
These lecture slides, by Dr Sidra Arshad, offer a quick overview of physiological basis of a normal electrocardiogram.
Learning objectives:
1. Define an electrocardiogram (ECG) and electrocardiography
2. Describe how dipoles generated by the heart produce the waveforms of the ECG
3. Describe the components of a normal electrocardiogram of a typical bipolar leads (limb II)
4. Differentiate between intervals and segments
5. Enlist some common indications for obtaining an ECG
Study Resources:
1. Chapter 11, Guyton and Hall Textbook of Medical Physiology, 14th edition
2. Chapter 9, Human Physiology - From Cells to Systems, Lauralee Sherwood, 9th edition
3. Chapter 29, Ganong’s Review of Medical Physiology, 26th edition
4. Electrocardiogram, StatPearls - https://www.ncbi.nlm.nih.gov/books/NBK549803/
5. ECG in Medical Practice by ABM Abdullah, 4th edition
6. ECG Basics, http://www.nataliescasebook.com/tag/e-c-g-basics
Report Back from SGO 2024: What’s the Latest in Cervical Cancer?bkling
Are you curious about what’s new in cervical cancer research or unsure what the findings mean? Join Dr. Emily Ko, a gynecologic oncologist at Penn Medicine, to learn about the latest updates from the Society of Gynecologic Oncology (SGO) 2024 Annual Meeting on Women’s Cancer. Dr. Ko will discuss what the research presented at the conference means for you and answer your questions about the new developments.
Pulmonary Thromboembolism - etilogy, types, medical- Surgical and nursing man...VarunMahajani
Disruption of blood supply to lung alveoli due to blockage of one or more pulmonary blood vessels is called as Pulmonary thromboembolism. In this presentation we will discuss its causes, types and its management in depth.
2. What are the hazards associated with
exposure to silica dust, as well as
basic preventive and control
measures
3. Each year more than one million
miners and other workers are
exposed to dangerous levels of the
dust - SILICA
4. DRILLERS
CRUSHER OPERATORS
BINSETTERS
QUALITY CONTROL TECH
SANDBLASTERS
PLANT HELPERS
MAINTENANCE PERSONNEL
MOBILE EQUIP. OPERATORS (without environmental cabs)
CHANGING SCREENS, BAG REPLACEMENT, BAGGING
(without environmental booths)
CONFINED SPACE ENTRY
SILICOSIS
HIGH RISK JOBS
5. Silica (Silicon Dioxide or SiO2)
is found mainly as quartz in
nearly all mineral deposits. It is
found in common rocks such as
granite, sandstone, limestone,
and is the principle component
of sand.
Where’s it come from?
7. What Are Dusts?
• Solid particles suspended in air
• Generated by blasting, drilling,
crushing, grinding, etc.
8. The Body Defends Against Dust By:
• Trapping larger particles in the nasal
passages, throat, trachea, larynx
• Trapping particles in mucous and
carrying them up the airways where
they are coughed out or swallowed
(mucociliary escalator)
9. Silica dust may be a hazard, if...
• it is in the respirable range:
small enough to get into the
air sacs (alveoli) ----
basically less than 10
microns in size
• it is present in high enough
concentrations
bronchiole
alveoli
10. How Does Silica Affect The Body?
• Silica particles build up in
the lungs leading to a type
of dust disease
(pneumoconiosis) called
silicosis
• Makes affected workers
more susceptible to TB
• Causes cancer
11. Silicosis : Severity of Disease
• Depends on:
Dust Concentration
Percent of free silica
Duration of exposure
Size of particles (respirable??)
12. Chronic Silicosis
• Most common form
• Occurs after 20 - 45 years of exposure
• Inhaled dust causes scarring
• After years of exposure - massive
fibrosis (scarring)
16. Development of Silicosis is:
• More Likely With:
• Inadequate dust control measures
• Inadequate respiratory protection
• Lack of medical screening
• Lack of air monitoring
17. Medical Exams Include:
• Medical and work history
• Checkup to detect early signs of lung
disease
• Chest x-ray (reviewed by “B” reader)
• Breathing test
• TB examination
18. Mine Operators Must
Report
• Silicosis cases for which award of
compensation or medical
diagnosis is received by miner
19. Evaluate Worker Exposures By:
• Doing work area inspections
• Sampling, monitoring workers
• Observing work practices