Dissolved Oxygen [DO]
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This slide is about Dissolved Oxygen and its importance and also it contains winkler's method for determining dissolved oxygen.There is a video attached to the slide.It contain the principle,interference,reagents and procedure for determination by winklers method
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Dissolved oxygen
This document discusses dissolved oxygen (DO) levels in drinking water and their importance for aquatic life. It provides a table comparing drinking water quality standards in different countries that includes testing for microbiological, chemical, physical, and radiological parameters. The document discusses the sources and importance of DO, how aquatic organisms rely on it, and consequences of unusual DO levels. It also outlines several common methods for analyzing DO levels, including optical, electrochemical, colorimetric, and titrimetric methods.
Dissolved oxygen and its method of determination
dissolved oxgen its definition and how it is available has been mentioned.also its methods of determination has shortly explained.
Chemical oxygen demand
This document discusses chemical oxygen demand (COD) testing. COD testing measures the amount of organic matter in water by determining the oxygen required to chemically oxidize the matter. Potassium dichromate is commonly used as the strong oxidizing agent. The COD test procedure involves refluxing a water sample with dichromate and sulfuric acid, then titrating the remaining dichromate with ferrous ammonium sulfate to determine the COD level in mg/L. COD testing provides faster results than biochemical oxygen demand (BOD) testing and oxidizes a wider range of compounds, though the results do not directly correlate to 5-day BOD levels.
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Total suspended solids (TSS), volatile suspended solids (VSS), and biochemical oxygen demand (BOD) are key parameters used to analyze wastewater and biosolids. TSS is determined by filtering a sample and weighing the solid residue, while VSS is the weight loss when ignited at 550°C. The sludge volume index (SVI) measures sludge settling characteristics important for activated sludge process design and operation. Colloidal solids cause turbidity which is removed through bioflocculation in biological treatment.
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There are three sources of alkalinity in water samples: hydroxide, carbonate, and bicarbonate alkalinity. The alkalinity method involves titrating a water sample from its original pH down to pH 8.3 to determine hydroxide and carbonate alkalinity. The sample is then titrated down to pH 4.5 to determine total alkalinity. Calculations are performed based on the volumes of acid added and normality to quantify each alkalinity type in units of mg/L as CaCO3. The source and amount of each alkalinity present depends on the initial pH and volume of acid needed to reach pH 8.3 versus the total volume to pH 4.
Dissolved Oxygen Demand (DO) AND Chemical Oxygen Demand (COD) PDF
Dissolved oxygen (DO) refers to the level of oxygen present in water or other liquids. It is important for assessing water quality and supporting aquatic life. Chemical oxygen demand (COD) measures the amount of oxygen required to chemically break down pollutants in water. DO enters water through diffusion from air and as a byproduct of photosynthesis. It can be measured using electrochemical, optical, or colorimetric methods. COD is determined by using potassium dichromate as an oxidizing agent under acidic conditions, then measuring the amount of chromium formed.
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The document discusses Chemical Oxygen Demand (COD) which is a measure of the amount of organic compounds in water. COD determines the amount of oxygen required to chemically oxidize organic matter in water and is measured in mg/L. It is commonly used to indirectly measure organic pollutants in surface water and wastewater. COD is often measured in wastewater treatment plants to assess treatment efficiency and indicate the presence of biologically resistant organic substances. The COD test can provide results faster than other tests and is useful for monitoring treatment processes and detecting issues.
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Dissolved oxygen
This document discusses dissolved oxygen (DO) levels in drinking water and their importance for aquatic life. It provides a table comparing drinking water quality standards in different countries that includes testing for microbiological, chemical, physical, and radiological parameters. The document discusses the sources and importance of DO, how aquatic organisms rely on it, and consequences of unusual DO levels. It also outlines several common methods for analyzing DO levels, including optical, electrochemical, colorimetric, and titrimetric methods.
Dissolved oxygen and its method of determination
dissolved oxgen its definition and how it is available has been mentioned.also its methods of determination has shortly explained.
Chemical oxygen demand
This document discusses chemical oxygen demand (COD) testing. COD testing measures the amount of organic matter in water by determining the oxygen required to chemically oxidize the matter. Potassium dichromate is commonly used as the strong oxidizing agent. The COD test procedure involves refluxing a water sample with dichromate and sulfuric acid, then titrating the remaining dichromate with ferrous ammonium sulfate to determine the COD level in mg/L. COD testing provides faster results than biochemical oxygen demand (BOD) testing and oxidizes a wider range of compounds, though the results do not directly correlate to 5-day BOD levels.
Td sand tss
Total suspended solids (TSS), volatile suspended solids (VSS), and biochemical oxygen demand (BOD) are key parameters used to analyze wastewater and biosolids. TSS is determined by filtering a sample and weighing the solid residue, while VSS is the weight loss when ignited at 550°C. The sludge volume index (SVI) measures sludge settling characteristics important for activated sludge process design and operation. Colloidal solids cause turbidity which is removed through bioflocculation in biological treatment.
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There are three sources of alkalinity in water samples: hydroxide, carbonate, and bicarbonate alkalinity. The alkalinity method involves titrating a water sample from its original pH down to pH 8.3 to determine hydroxide and carbonate alkalinity. The sample is then titrated down to pH 4.5 to determine total alkalinity. Calculations are performed based on the volumes of acid added and normality to quantify each alkalinity type in units of mg/L as CaCO3. The source and amount of each alkalinity present depends on the initial pH and volume of acid needed to reach pH 8.3 versus the total volume to pH 4.
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Dissolved oxygen (DO) refers to the level of oxygen present in water or other liquids. It is important for assessing water quality and supporting aquatic life. Chemical oxygen demand (COD) measures the amount of oxygen required to chemically break down pollutants in water. DO enters water through diffusion from air and as a byproduct of photosynthesis. It can be measured using electrochemical, optical, or colorimetric methods. COD is determined by using potassium dichromate as an oxidizing agent under acidic conditions, then measuring the amount of chromium formed.
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The document discusses Chemical Oxygen Demand (COD) which is a measure of the amount of organic compounds in water. COD determines the amount of oxygen required to chemically oxidize organic matter in water and is measured in mg/L. It is commonly used to indirectly measure organic pollutants in surface water and wastewater. COD is often measured in wastewater treatment plants to assess treatment efficiency and indicate the presence of biologically resistant organic substances. The COD test can provide results faster than other tests and is useful for monitoring treatment processes and detecting issues.
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The document discusses biochemical oxygen demand (BOD), which measures the amount of oxygen used by microorganisms to break down organic waste in water. When organic waste is present, bacteria consume dissolved oxygen to decompose the waste. BOD tests how much oxygen is absorbed over 5 days at 20°C. A high BOD level indicates more organic waste requiring decomposition, lowering available oxygen for aquatic life. BOD is used to measure water pollution and assess treatment plant performance by comparing raw sewage and treated effluent BOD levels. Proper BOD testing follows steps including sample collection, dilution, seeding with bacteria, initial and final oxygen readings, and calculations to determine BOD in mg/L.
BIOLOGICAL OXYGEN DEMAND
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Chemical oxygen demand
Chemical oxygen demand (COD) is a measure of the oxygen-consuming capacity of inorganic and organic matter in water. COD determines the amount of oxygen required to oxidize organic compounds and inorganic matter in water. There are two main methods to measure COD - the open reflux method and closed reflux method. The open reflux method involves refluxing the sample and dichromate solution for 2 hours, then titrating the remaining dichromate with ferrous ammonium sulfate to determine COD concentration in mg/L. A high COD means more oxidizable organic material is present in water, which can reduce dissolved oxygen and harm aquatic life. COD is useful for assessing waste strength and effects on receiving environments
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This presentation describes, how the water can be analyzed using the basic parameters like DO, COD, BOD, Alkalinity and so on. The physical, chemical, and biological parameters were discussed here.
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The document summarizes a study that measured dissolved oxygen levels at 5 sites along a river using the Winkler method. The results showed variations in DO levels across sites, with the highest amount at Site E (10.7 mg/L) and the lowest at Site C (3.9 mg/L). Factors like temperature, nutrients, and water flow can affect dissolved oxygen concentrations in aquatic environments.
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This document describes methods for determining the amount of carbon dioxide in water samples. It discusses how surface waters typically contain less than 10 ppm of free carbon dioxide while ground waters often exceed this level. The classical buret titration method and improved evolution method are described for determining carbon dioxide concentration. An instrumental coulometry method is also mentioned. The document provides details on reagents, procedures, and precautions for the buret titration method, which involves titrating a water sample with sodium hydroxide and measuring the amount of carbon dioxide absorbed.
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This document describes an experiment to determine the alkalinity of various water samples. It defines alkalinity as the amount of bases in a solution and lists the main components that contribute to alkalinity in water as carbonates, bicarbonates and hydroxides. The document outlines the procedure to titrate water samples with hydrochloric acid using phenolphthalein and methyl orange indicators. The results show that a sample of dirty water after washing clothes had the highest alkalinity at 750ppm, while water dripping from an air conditioner had the lowest alkalinity at 50ppm. Based on these alkalinity levels, the water dripping from the air conditioner was determined to be the most pure
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BOD is a measure of the amount of dissolved oxygen needed by aerobic biological organisms to break down organic material in water over a specific time period, usually 5 days. It is determined by measuring the dissolved oxygen concentration in a water sample before and after incubation. The Winkler method is used, in which manganese is oxidized to a brown precipitate by dissolved oxygen, then dissolved and titrated against a standard solution. COD measures the amount of oxygen required to chemically oxidize all organic compounds in water, determined by refluxing a sample with potassium dichromate and titrating the remaining dichromate with ferrous ammonium sulfate.
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BOD measures the amount of dissolved oxygen needed by aerobic biological organisms to break down organic material in water, while COD measures the amount of oxygen required to chemically oxidize organic compounds. COD is generally higher than BOD because it measures oxidation of all organic compounds, whereas BOD only measures biologically degradable compounds. Both are used to assess water quality, but COD provides a faster and more accurate measurement than BOD. The ratio of COD to BOD can also indicate the toxicity of wastewater.
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This document discusses water quality management and focuses on water pollutants, their sources, and management strategies for rivers and lakes. It outlines various types of pollutants including oxygen-demanding materials, nutrients, pathogens, suspended solids, salts, toxic compounds, and heat. For lakes, it describes limnology, stratification and turnover, biological zones, productivity levels, eutrophication processes, and algal growth requirements. It also discusses controlling phosphorus from sources like wastewaters, septic tanks, agricultural runoff, and acidification to manage water quality in lakes.
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The document discusses biochemical oxygen demand (BOD), which measures the amount of oxygen used by microorganisms to break down organic waste in water. When organic waste is present, bacteria consume dissolved oxygen to decompose the waste. BOD tests how much oxygen is absorbed over 5 days at 20°C. A high BOD level indicates more organic waste requiring decomposition, lowering available oxygen for aquatic life. BOD is used to measure water pollution and assess treatment plant performance by comparing raw sewage and treated effluent BOD levels. Proper BOD testing follows steps including sample collection, dilution, seeding with bacteria, initial and final oxygen readings, and calculations to determine BOD in mg/L.
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The document discusses biochemical oxygen demand (BOD) and its importance as a measure of water quality. BOD is defined as the amount of dissolved oxygen needed by aerobic biological organisms to break down organic material in a water sample over a 5 day incubation period at 20°C. A higher BOD indicates a higher level of organic pollution. BOD is used to assess the effectiveness of wastewater treatment plants and provides an indication of overall water quality. The standard BOD test involves measuring the dissolved oxygen in a sample before and after 5 days, with the difference representing the oxygen consumed during decomposition of organic compounds.
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Chemical oxygen demand (COD) is a measure of the oxygen-consuming capacity of inorganic and organic matter in water. COD determines the amount of oxygen required to oxidize organic compounds and inorganic matter in water. There are two main methods to measure COD - the open reflux method and closed reflux method. The open reflux method involves refluxing the sample and dichromate solution for 2 hours, then titrating the remaining dichromate with ferrous ammonium sulfate to determine COD concentration in mg/L. A high COD means more oxidizable organic material is present in water, which can reduce dissolved oxygen and harm aquatic life. COD is useful for assessing waste strength and effects on receiving environments
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This presentation describes, how the water can be analyzed using the basic parameters like DO, COD, BOD, Alkalinity and so on. The physical, chemical, and biological parameters were discussed here.
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Deals with the measurement of organic matter concentration in water and wastewater. BOD, BOD kinetics and COD tests are discussed at length. Further, as part of the ultimate BOD measurement, other associated tests like Dissolved Oxygen and Ammonical, Nitrate and Nitrite forms of nitrogen are also discussed.
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The document summarizes a study that measured dissolved oxygen levels at 5 sites along a river using the Winkler method. The results showed variations in DO levels across sites, with the highest amount at Site E (10.7 mg/L) and the lowest at Site C (3.9 mg/L). Factors like temperature, nutrients, and water flow can affect dissolved oxygen concentrations in aquatic environments.
determination of carbon dioxide in water
This document describes methods for determining the amount of carbon dioxide in water samples. It discusses how surface waters typically contain less than 10 ppm of free carbon dioxide while ground waters often exceed this level. The classical buret titration method and improved evolution method are described for determining carbon dioxide concentration. An instrumental coulometry method is also mentioned. The document provides details on reagents, procedures, and precautions for the buret titration method, which involves titrating a water sample with sodium hydroxide and measuring the amount of carbon dioxide absorbed.
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Analysis BOD is an important parameter in identifying the extend of pollution in a water body. This presentation explains the various methods of BOD analysis as per the APHA manual
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It consists of everything about the water parameters which is particularly about the DO, COD, and BOD. Hope you all be benefited from my slide.
Estimation of types of alkalinity in waste water samples
This document describes an experiment to determine the alkalinity of various water samples. It defines alkalinity as the amount of bases in a solution and lists the main components that contribute to alkalinity in water as carbonates, bicarbonates and hydroxides. The document outlines the procedure to titrate water samples with hydrochloric acid using phenolphthalein and methyl orange indicators. The results show that a sample of dirty water after washing clothes had the highest alkalinity at 750ppm, while water dripping from an air conditioner had the lowest alkalinity at 50ppm. Based on these alkalinity levels, the water dripping from the air conditioner was determined to be the most pure
Biochemical oxygen demand
BOD is a measure of the amount of dissolved oxygen needed by aerobic biological organisms to break down organic material in water over a specific time period, usually 5 days. It is determined by measuring the dissolved oxygen concentration in a water sample before and after incubation. The Winkler method is used, in which manganese is oxidized to a brown precipitate by dissolved oxygen, then dissolved and titrated against a standard solution. COD measures the amount of oxygen required to chemically oxidize all organic compounds in water, determined by refluxing a sample with potassium dichromate and titrating the remaining dichromate with ferrous ammonium sulfate.
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This document defines total soluble solids and total suspended solids and discusses their significance. Total soluble solids refers to materials that are completely dissolved in water and filterable, as well as the residue left after evaporating a filtered sample. They are useful for determining water quality for drinking, agriculture, and industry. High soluble solid levels can negatively impact taste, odor, dissolved oxygen levels, and corrosion. Total suspended solids refers to materials that are not dissolved in water and non-filterable, as well as the residue of a non-filtered evaporated sample. Suspended solids are aesthetically displeasing and can harbor chemical and biological agents while depleting dissolved oxygen levels.
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BOD measures the amount of dissolved oxygen needed by aerobic biological organisms to break down organic material in water, while COD measures the amount of oxygen required to chemically oxidize organic compounds. COD is generally higher than BOD because it measures oxidation of all organic compounds, whereas BOD only measures biologically degradable compounds. Both are used to assess water quality, but COD provides a faster and more accurate measurement than BOD. The ratio of COD to BOD can also indicate the toxicity of wastewater.
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Water quality depends on various physical, chemical, and biological parameters. Key parameters for assessing water quality for human consumption include pH, dissolved oxygen, biochemical oxygen demand, temperature, conductivity, total dissolved solids, and turbidity. Monitoring these parameters provides information about water contamination levels and suitability for drinking and environmental uses.
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This document discusses water quality management and focuses on water pollutants, their sources, and management strategies for rivers and lakes. It outlines various types of pollutants including oxygen-demanding materials, nutrients, pathogens, suspended solids, salts, toxic compounds, and heat. For lakes, it describes limnology, stratification and turnover, biological zones, productivity levels, eutrophication processes, and algal growth requirements. It also discusses controlling phosphorus from sources like wastewaters, septic tanks, agricultural runoff, and acidification to manage water quality in lakes.
Wastewater treatment technologies for removal of nitrogen and phosphorus
The document discusses technologies for removing nitrogen and phosphorus from wastewater. It describes biological and physico-chemical processes for nitrogen removal, including nitrification, denitrification, air stripping, ion exchange and chemical precipitation. For phosphorus removal, it covers biological phosphate uptake and chemical precipitation by adding coagulants like aluminum, calcium or iron to wastewater. The document provides details on each treatment process with examples of common methods and diagrams of system designs.
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Alkalinity in water is measured by titrating a water sample with sulfuric acid and monitoring the pH. Alkalinity is caused by hydroxides, carbonates, and bicarbonates and is expressed in units of mg/L of calcium carbonate. The amount of acid needed to reduce the pH to 8.3 measures phenolphthalein alkalinity, while the amount to reduce to 4.5 measures total alkalinity. Different combinations of hydroxides, carbonates, and bicarbonates can be present depending on the initial pH. Alkalinity data provides information useful for water treatment processes like coagulation, softening, and corrosion control.
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This document provides a procedure for determining the dissolved oxygen (DO) content of a water sample using the iodometric titration method. Key steps include adding manganese sulfate and an alkali-iodide solution to the sample to oxidize DO, followed by sulfuric acid to dissolve precipitates and liberate iodine in proportion to the original DO. The iodine is then titrated with sodium thiosulfate using starch indicator. The volume of titrant used is used to calculate DO concentration in mg/L based on the normality of the titrant and sample volume. Reagents and equipment needed are also specified.
REDOX TITRATION.pdf
Redox titration, Reduction & Oxidation, Theory & Principle, Redox indicator, Permanganometry, Iodimetry, Iodometry, Dichrometry, Cerimetry, Bromimetry, Titanometry, Titration involving Potassium iodate
Applications of Redox Titrations - Reon Sylvester
Redox titrations are used for a variety of applications in organic and inorganic analysis. Some examples include determining chemical oxygen demand to manage industrial wastewaters, determining water content in non-aqueous solvents using Karl Fischer titration, and measuring dissolved oxygen levels through Winkler's method. Iodometric and iodimetric titrations can be used to indirectly or directly determine oxidizing or reducing agents by exploiting the redox reaction between iodine and the analyte. Chlorination of public water supplies is also monitored through an indirect iodometric titration to measure total chlorine residual levels.
Routine analysis of wastewaters quality parameters
This document discusses parameters for analyzing waste water quality. It describes the objectives of waste water analysis which include monitoring treatment plant efficiency. Physical analyses examine characteristics like color and odor, while chemical analyses determine substance amounts. Key parameters discussed include biochemical oxygen demand (BOD), chemical oxygen demand (COD), dissolved oxygen, pH, nitrogen, and solids. BOD testing measures oxygen consumed by bacteria breaking down organic matter over time. COD testing uses chemical oxidization to similarly assess ability to consume oxygen. Their ratio provides information on a waste water's biodegradability.
Charecteristics of wastewater
Wastewater has physical, chemical, and biological characteristics. Physically, it contains solids like total suspended solids and total dissolved solids that affect turbidity. Chemically, wastewater has parameters like pH, alkalinity, nitrogen, and phosphorus. Common methods to measure organic content include biochemical oxygen demand (BOD), chemical oxygen demand (COD), and total organic carbon (TOC). Biologically, wastewater contains organisms like bacteria, algae, protozoa, and viruses, some of which can be pathogenic.
Similar to Dissolved Oxygen [DO] (20)
Determination of dissolved oxygen (do) in a given water sample
Determination of dissolved oxygen (do) in a given water sample
0.0 EXPERIMENT ON DETERMINATION OF DISSOLVED OXYGEN
0.0 EXPERIMENT ON DETERMINATION OF DISSOLVED OXYGEN
Routine analysis of wastewaters quality parameters
Routine analysis of wastewaters quality parameters
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Evolving Lifecycles with High Resolution Site Characterization (HRSC) and 3-D...
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◇回国时间很长，忘记办理；
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◇企事业单位必须要求办理的
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2:同时对留学生所学专业登记给予评定
3:国家专业人才认证中心颁发入库证书
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5:凡事获得留信网入网的信息将会逐步更新到个人身份内，将在公安局网内查询个人身份证信息后，同步读取人才网入库信息
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1:1完美还原海外各大学毕业材料上的工艺：水印，阴影底纹，钢印LOGO烫金烫银，LOGO烫金烫银复合重叠。文字图案浮雕、激光镭射、紫外荧光、温感、复印防伪等防伪工艺。材料咨询办理、认证咨询办理请加学历顾问Q/微741003700
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三.真实教育部学历学位认证（教育部存档！教育部留服网站永久可查）
四.办理各国各大学文凭(一对一专业服务,可全程监控跟踪进度)
如果您处于以下几种情况：
◇在校期间，因各种原因未能顺利毕业……拿不到官方毕业证【q/微741003700】
◇面对父母的压力，希望尽快拿到；
◇不清楚认证流程以及材料该如何准备；
◇回国时间很长，忘记办理；
◇回国马上就要找工作，办给用人单位看；
◇企事业单位必须要求办理的
◇需要报考公务员、购买免税车、落转户口
◇申请留学生创业基金
留信网认证的作用:
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2:同时对留学生所学专业登记给予评定
3:国家专业人才认证中心颁发入库证书
4:这个认证书并且可以归档倒地方
5:凡事获得留信网入网的信息将会逐步更新到个人身份内，将在公安局网内查询个人身份证信息后，同步读取人才网入库信息
6:个人职称评审加20分
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三、进国企，银行，事业单位，考公务员等等，这些单位是必需要提供真实教育部认证的，办理教育部认证所需资料众多且烦琐，所有材料您都必须提供原件，我们凭借丰富的经验，快捷的绿色通道帮您快速整合材料，让您少走弯路。
留信网认证的作用:
1:该专业认证可证明留学生真实身份
2:同时对留学生所学专业登记给予评定
3:国家专业人才认证中心颁发入库证书
4:这个认证书并且可以归档倒地方
5:凡事获得留信网入网的信息将会逐步更新到个人身份内，将在公安局网内查询个人身份证信息后，同步读取人才网入库信息
6:个人职称评审加20分
7:个人信誉贷款加10分
8:在国家人才网主办的国家网络招聘大会中纳入资料，供国家高端企业选择人才
【关于价格问题（保证一手价格）】
我们所定的价格是非常合理的，而且我们现在做得单子大多数都是代理和回头客户介绍的所以一般现在有新的单子 我给客户的都是第一手的代理价格，因为我想坦诚对待大家 不想跟大家在价格方面浪费时间
对于老客户或者被老客户介绍过来的朋友，我们都会适当给一些优惠。
Download the Latest OSHA 10 Answers PDF : oyetrade.com
Latest OSHA 10 Test Question and Answers PDF for Construction and General Industry Exam.
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To Help OSHA 10 trainees to pass their pre-test and post-test we have prepared set of 390 question and answers called OSHA 10 Answers in downloadable PDF format. The OSHA 10 Answers question bank is prepared by our in-house highly experienced safety professionals and trainers. The OSHA 10 Answers document consists of 390 MCQ type question and answers updated for year 2024 exams.
Lessons from operationalizing integrated landscape approaches
Presented by James Reed at "9th Landscape Sustainability Science Forum" on 11 May 2024
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【业务选择办理准则】
一、工作未确定，回国需先给父母、亲戚朋友看下文凭的情况，办理一份就读学校的毕业证【微信176555708】文凭即可
二、回国进私企、外企、自己做生意的情况，这些单位是不查询毕业证真伪的，而且国内没有渠道去查询国外文凭的真假，也不需要提供真实教育部认证。鉴于此，办理一份毕业证【微信176555708】即可
三、进国企，银行，事业单位，考公务员等等，这些单位是必需要提供真实教育部认证的，办理教育部认证所需资料众多且烦琐，所有材料您都必须提供原件，我们凭借丰富的经验，快捷的绿色通道帮您快速整合材料，让您少走弯路。
留信网认证的作用:
1:该专业认证可证明留学生真实身份
2:同时对留学生所学专业登记给予评定
3:国家专业人才认证中心颁发入库证书
4:这个认证书并且可以归档倒地方
5:凡事获得留信网入网的信息将会逐步更新到个人身份内，将在公安局网内查询个人身份证信息后，同步读取人才网入库信息
6:个人职称评审加20分
7:个人信誉贷款加10分
8:在国家人才网主办的国家网络招聘大会中纳入资料，供国家高端企业选择人才
留信网服务项目：
1、留学生专业人才库服务（留信分析）
2、国（境）学习人员提供就业推荐信服务
3、留学人员区块链存储服务
→ 【关于价格问题（保证一手价格）】
我们所定的价格是非常合理的，而且我们现在做得单子大多数都是代理和回头客户介绍的所以一般现在有新的单子 我给客户的都是第一手的代理价格，因为我想坦诚对待大家 不想跟大家在价格方面浪费时间
对于老客户或者被老客户介绍过来的朋友，我们都会适当给一些优惠。
选择实体注册公司办理，更放心，更安全！我们的承诺：客户在留信官方认证查询网站查询到认证通过结果后付款，不成功不收费！
原版制作(Manitoba毕业证书)曼尼托巴大学毕业证学位证一模一样
学校原件一模一样【微信：741003700 】《(Manitoba毕业证书)曼尼托巴大学毕业证学位证》【微信：741003700 】学位证，留信认证（真实可查，永久存档）原件一模一样纸张工艺/offer、雅思、外壳等材料/诚信可靠,可直接看成品样本，帮您解决无法毕业带来的各种难题！外壳，原版制作，诚信可靠，可直接看成品样本。行业标杆！精益求精，诚心合作，真诚制作！多年品质 ,按需精细制作，24小时接单,全套进口原装设备。十五年致力于帮助留学生解决难题，包您满意。
本公司拥有海外各大学样板无数，能完美还原。
1:1完美还原海外各大学毕业材料上的工艺：水印，阴影底纹，钢印LOGO烫金烫银，LOGO烫金烫银复合重叠。文字图案浮雕、激光镭射、紫外荧光、温感、复印防伪等防伪工艺。材料咨询办理、认证咨询办理请加学历顾问Q/微741003700
【主营项目】
一.毕业证【q微741003700】成绩单、使馆认证、教育部认证、雅思托福成绩单、学生卡等！
二.真实使馆公证(即留学回国人员证明,不成功不收费)
三.真实教育部学历学位认证（教育部存档！教育部留服网站永久可查）
四.办理各国各大学文凭(一对一专业服务,可全程监控跟踪进度)
如果您处于以下几种情况：
◇在校期间，因各种原因未能顺利毕业……拿不到官方毕业证【q/微741003700】
◇面对父母的压力，希望尽快拿到；
◇不清楚认证流程以及材料该如何准备；
◇回国时间很长，忘记办理；
◇回国马上就要找工作，办给用人单位看；
◇企事业单位必须要求办理的
◇需要报考公务员、购买免税车、落转户口
◇申请留学生创业基金
留信网认证的作用:
1:该专业认证可证明留学生真实身份
2:同时对留学生所学专业登记给予评定
3:国家专业人才认证中心颁发入库证书
4:这个认证书并且可以归档倒地方
5:凡事获得留信网入网的信息将会逐步更新到个人身份内，将在公安局网内查询个人身份证信息后，同步读取人才网入库信息
6:个人职称评审加20分
7:个人信誉贷款加10分
8:在国家人才网主办的国家网络招聘大会中纳入资料，供国家高端企业选择人才
Effect Of Temperature On Plants Development.pptx
How change in temperature effect the growth of Plants.
World earth day powe point presentation 2024
Earth Day How has technology changed our life?
Thinkers/Inquiry • How has our ability to think and inquire helped to advance technology?
Vocabulary • Nature Deficit Disorder~ A condition that some people maintain is a spreading affliction especially affecting youth but also their adult counterparts, characterized by an excessive lack of familiarity with the outdoors and the natural world. • Precautionary Principle~ The approach whereby any possible risk associated with the introduction of a new technology is largely avoided, until a full understanding of its impact on health, environment and other areas is available.
What is technology? • Brainstorm a list of technology that you use everyday that your parents or grandparents did not have. • Compare your list with a partner.
Formulation of aramang baked products enriched with malunggay
The modification of an existing product or the formulation of a new product to fill a newly identified market niche or customer need are both examples of product development. This study generally developed and conducted the formulation of aramang baked products enriched with malunggay conducted by the researchers. Specifically, it answered the acceptability level in terms of taste, texture, flavor, odor, and color also the overall acceptability of enriched aramang baked products. The study used the frequency distribution for evaluators to determine the acceptability of enriched aramang baked products enriched with malunggay. As per sensory evaluation conducted by the researchers, it was proven that aramang baked products enriched with malunggay was acceptable in terms of Odor, Taste, Flavor, Color, and Texture. Based on the results of sensory evaluation of enriched aramang baked products proven that three (3) treatments were all highly acceptable in terms of variable Odor, Taste, Flavor, Color and Textures conducted by the researchers.
Optimizing Post Remediation Groundwater Performance with Enhanced Microbiolog...
Results of geophysics and pneumatic injection pilot tests during 2003 – 2007 yielded significant positive results for injection delivery design and contaminant mass treatment, resulting in permanent shut-down of an existing groundwater Pump & Treat system.
Accessible source areas were subsequently removed (2011) by soil excavation and treated with the placement of Emulsified Vegetable Oil EVO and zero-valent iron ZVI to accelerate treatment of impacted groundwater in overburden and weathered fractured bedrock. Post pilot test and post remediation groundwater monitoring has included analyses of CVOCs, organic fatty acids, dissolved gases and QuantArray® -Chlor to quantify key microorganisms (e.g., Dehalococcoides, Dehalobacter, etc.) and functional genes (e.g., vinyl chloride reductase, methane monooxygenase, etc.) to assess potential for reductive dechlorination and aerobic cometabolism of CVOCs.
In 2022, the first commercial application of MetaArray™ was performed at the site. MetaArray™ utilizes statistical analysis, such as principal component analysis and multivariate analysis to provide evidence that reductive dechlorination is active or even that it is slowing. This creates actionable data allowing users to save money by making important site management decisions earlier.
The results of the MetaArray™ analysis’ support vector machine (SVM) identified groundwater monitoring wells with a 80% confidence that were characterized as either Limited for Reductive Decholorination or had a High Reductive Reduction Dechlorination potential. The results of MetaArray™ will be used to further optimize the site’s post remediation monitoring program for monitored natural attenuation.
Biomimicry in agriculture: Nature-Inspired Solutions for a Greener Future
Presentation made for the Webinar Series on Biomimicry for sustainability on 1st June 2024 organized by Green Building Council Sri Lanka
一比一原版（Glasgow毕业证）英国格拉斯哥大学毕业证如何办理
原件一模一样【微信：WP101A】【（Glasgow毕业证）英国格拉斯哥大学毕业证学位证成绩单】【微信：WP101A】（留信学历认证永久存档查询）采用学校原版纸张、特殊工艺完全按照原版一比一制作（包括：隐形水印，阴影底纹，钢印LOGO烫金烫银，LOGO烫金烫银复合重叠，文字图案浮雕，激光镭射，紫外荧光，温感，复印防伪）行业标杆！精益求精，诚心合作，真诚制作！多年品质 ,按需精细制作，24小时接单,全套进口原装设备，十五年致力于帮助留学生解决难题，业务范围有加拿大、英国、澳洲、韩国、美国、新加坡，新西兰等学历材料，包您满意。
【业务选择办理准则】
一、工作未确定，回国需先给父母、亲戚朋友看下文凭的情况，办理一份就读学校的毕业证【微信：WP101A】文凭即可
二、回国进私企、外企、自己做生意的情况，这些单位是不查询毕业证真伪的，而且国内没有渠道去查询国外文凭的真假，也不需要提供真实教育部认证。鉴于此，办理一份毕业证【微信：WP101A】即可
三、进国企，银行，事业单位，考公务员等等，这些单位是必需要提供真实教育部认证的，办理教育部认证所需资料众多且烦琐，所有材料您都必须提供原件，我们凭借丰富的经验，快捷的绿色通道帮您快速整合材料，让您少走弯路。
留信网认证的作用:
1:该专业认证可证明留学生真实身份【微信：WP101A】
2:同时对留学生所学专业登记给予评定
3:国家专业人才认证中心颁发入库证书
4:这个认证书并且可以归档倒地方
5:凡事获得留信网入网的信息将会逐步更新到个人身份内，将在公安局网内查询个人身份证信息后，同步读取人才网入库信息
6:个人职称评审加20分
7:个人信誉贷款加10分
8:在国家人才网主办的国家网络招聘大会中纳入资料，供国家高端企业选择人才
→ 【关于价格问题（保证一手价格）
我们所定的价格是非常合理的，而且我们现在做得单子大多数都是代理和回头客户介绍的所以一般现在有新的单子 我给客户的都是第一手的代理价格，因为我想坦诚对待大家 不想跟大家在价格方面浪费时间
对于老客户或者被老客户介绍过来的朋友，我们都会适当给一些优惠。
选择实体注册公司办理，更放心，更安全！我们的承诺：可来公司面谈，可签订合同，会陪同客户一起到教育部认证窗口递交认证材料，客户在教育部官方认证查询网站查询到认证通过结果后付款，不成功不收费！
办理（Glasgow毕业证）英国格拉斯哥大学毕业证学位证【微信：WP101A 】外观非常精致，由特殊纸质材料制成，上面印有校徽、校名、毕业生姓名、专业等信息。
办理（Glasgow毕业证）英国格拉斯哥大学毕业证学位证【微信：WP101A 】格式相对统一，各专业都有相应的模板。通常包括以下部分：
校徽：象征着学校的荣誉和传承。
校名:学校英文全称
授予学位：本部分将注明获得的具体学位名称。
毕业生姓名：这是最重要的信息之一，标志着该证书是由特定人员获得的。
颁发日期：这是毕业正式生效的时间，也代表着毕业生学业的结束。
其他信息：根据不同的专业和学位，可能会有一些特定的信息或章节。
办理（Glasgow毕业证）英国格拉斯哥大学毕业证学位证【微信：WP101A 】价值很高，需要妥善保管。一般来说，应放置在安全、干燥、防潮的地方，避免长时间暴露在阳光下。如需使用，最好使用复印件而不是原件，以免丢失。
综上所述，办理（Glasgow毕业证）英国格拉斯哥大学毕业证学位证【微信：WP101A 】是证明身份和学历的高价值文件。外观简单庄重，格式统一，包括重要的个人信息和发布日期。对持有人来说，妥善保管是非常重要的。
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Download the Latest OSHA 10 Answers PDF : oyetrade.com
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Lessons from operationalizing integrated landscape approaches
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Formulation of aramang baked products enriched with malunggay
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BASIC CONCEPT OF ENVIRONMENT AND DIFFERENT CONSTITUTENET OF ENVIRONMENT
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Optimizing Post Remediation Groundwater Performance with Enhanced Microbiolog...
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Biomimicry in agriculture: Nature-Inspired Solutions for a Greener Future
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Dissolved Oxygen [DO]
- 1. Contents 1. Dissolved oxygen 2. Determination by Winkler’s Method 3. Model calculations BY Arun & Amal
- 2. – Oxygen is one of the most common dissolved gases in the water. – DO is vital for survival of aquatic life in water bodies. Oxygen can become dissolved in three ways 1. Introduced into water by algae, through photosynthesis. 2. Introduced by mechanical equipment 3. Enters water directly from atmosphere
- 3. – DO is a fundamental requirement for maintenance of life for aquatic population – Important parameter to the extent of water purity or extent of pollution associated with it. – Concentration of DO varies with waters – The amount of DO depends on the solubility of oxygen in each type of water which, in turn, is greatly influenced by temperature, pressure, salinity etc… – Expressed in terms of mg/L or ppm – DO for good water quality is 4-6 mg/L – When the level of DO falls below the minimum critical value required to ensure healthy aquatic life, it indicates pollution.
- 5. – Principle: – Interference: – Reagents Required: – Procedure 1. Standardization of sodium thiosulphate solution 2. Titration with the water samples
- 6. Pottasium oxide is oxidised to I₂ with the dissolved oxygen present in the water sample after adding MnSO₄ , NaOH and KI. The basic manganic oxide formed from NaOH and MnSO₄ acts as an oxygen carrier to enable the dissolved oxygen in the molecular form to take part in the reaction. The DO present in the sample oxidises the Mn²⁺ to its higher valency which precipitates as a brown hydrated oxide after the addition of NaOH and KI. On acidification, the manganese reverts back to the divalent state and an equivalent amount of iodine is liberated from the KI present. This liberated iodine is titrated against standard sodium thiosulphate(hypo) solution, using starch indicator.
- 7. • MnSO₄ + 2KOH Mn(OH)₂ + K₂SO₄ • 2Mn(OH)₂ + O₂ 2MnO(OH)₂ (Basic Manganic Oxide) • MnO(OH)₂ +H₂SO₄ MnSO₄ + 2H₂O + O • 2KI + H₂SO₄ + O K₂SO₄ + H₂O + I₂ • I₂ + Na₂S₂O₃ Na₂S₄O₆ + 2NaI
- 8. Reagents Required Standard N/20 K₂Cr₂O₇ N/20 Sodium Thiosulphate Solution Concentrated H₂SO₄ Manganese Sulphate Alkaline Iodide-Azide Reagent Starch Solution Solid KI free from iodate NaHCO₃ Conc. HCL
- 9. Procedure A. Standardization of Sodium Thiosulphate solution: B. Titration with the water samples: