RHAMNOLIPID PURIFICATION USING UPLC-MS/MS
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After a pilot scale production of a rhamnolipidic biosurfactant, it is purified using two methods, chemical separation and chromatography. We use UPLC-MS/MS for the characterization of the chemical species.
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Residuos de flores como adsorventes de bajo costo
This document describes research on using flower waste (carnation, rose, and daisy stalks) as a low-cost adsorbent to remove Acid Blue 9 dye from water. Batch experiments tested the effect of pH, adsorbent dosage, and initial dye concentration on dye removal efficiency. Equilibrium was modeled using the Langmuir and Freundlich isotherms, with better fit to the Freundlich model. Kinetic studies fit best to a pseudo-second order model. Over 90% removal was achieved at pH 2.0 using 15 mg/L initial dye concentration and 4 g/L adsorbent dosage. The flower wastes were characterized and showed potential as an alternative,
TLC Separation of Cephalosporins on Stannic Arsenate Layers
Abstract: The chromatographic behaviour of some cephalosporins has been studied on synthetic stannic arsenate layers using citrate and borate buffers as mobile phases. Several ternary and quaternary separations have been achieved. The utility of these separations has been demonstrated for estimation of cephalosporins in blood serum from patients.This method used is simple, rapid ,reproducible and can also be applied in the separation and determination of cephalosporins in other biological samples. The limit of detection was found to be 0.20 μg/l.
microbial community structure of polluted river sediments
Phospholipid Fatty Acid Analysis to measure the Impact of acid rock drainage on microbial communities in sediment and comparison with other measures,
Synthesis, Characterization and Antibacterial Activity of New Complexes of So...
Complexes of some lanthanide picrates (Ln3+ = Pr3+, Nd3+ and Dy3+) with benzo-18-crown-6 and 221-cryptand were synthesized and characterized by elemental analysis, FTIR, and UV-Visible. Spectrophotometric methods, thermal analysis (TGA & DTG), melting point, magnetic susceptibility and molar conductance. Also an in-vitro study on gram positive (Staphylococcus aureus) and gram negative bacteria (Escherichia coli, Salmonella and pseudomonas aeruginosa) was performed and the results were compared to those of the broad spectrum antibiotic Chloramphinicol. The benzo-18-crown-6 complexes have the general formula of [Ln.L.(Pic)2]Pic.nH2O , where; (Ln3+ = Pr3+, Nd3+, and Dy3+) , (L = Benzo-18-crown-6) , (Pic = Picrate anion) , (n = 1-2). In these complexes two picrate anions are coordinated to the metal ion through the phenolic oxygen and oxygen of the ortho nitro group, thus, the metal ions in these complexes have a coordination number of (10). The complexes of 221-cryptand have the general formula of [Ln.L.(Pic)]Pic2.nH2O where; (Ln3+ = Pr3+, Nd3+, and Dy3+), (L = 221-cryptand), (Pic = Picrate anion), (n = 1,2 or 7). In these complexes one picrate anion is coordinated to the metal ion, also through the phenolic oxygen and the oxygen from the ortho nitro group, thus the metal ions in the cryptand complexes have a coordination number of (9).
Kinetic determination of morphine in urine
In view of the medical and social problem caused by the increasing number of drug addicts the determination of opium alka-loids is of special importance. Morphine is known as a highly addictive and potent narcotic but drug users prefer heroin because of its more intense immediate effect. As heroin is hydrolysed in the organism to morphine the knowledge of the morphine content of biological fluids and tissues is indispensable for forensic and therapeutic purposes. The methods recently used for the determination of morphine in urine are gas-liquid chromatography 1, high-pressure liquid chromatography with fluorimetric determination 2 and gas chromatography mass spectrometry 3. In this paper a simple and inexpensive kinetic method is presented , based on the decomposition of the coloured compound formed by the reaction of hydrogen peroxide with cobalt(II) and morphine, in the presence of carbonate buffer. There is a definite concentration range over which the decomposition rate of the compound mentioned is a linear function of the morphine concentration.
Microchimica Acta Volume 84 issue 5-6 1984 [doi 10.1007_bf01197162] G. A. Mil...
Microchimica Acta Volume 84 issue 5-6 1984 [doi 10.1007_bf01197162] G. A. Mil...Sekheta Bros Company
This document describes a kinetic method for determining morphine concentration in urine samples. The method involves reacting morphine in the sample with hydrogen peroxide and cobalt(II) ions to form a colored compound. The rate of decomposition of this compound is measured photometrically and is directly proportional to the concentration of morphine over a certain range. The method was found to accurately determine morphine concentrations from 1.5 to 12.3 μg/ml in urine samples. It was also applied to analyze urine samples from individuals suspected of taking morphine or heroin and the results correlated well with an established HPLC method.Gjesm148651451593800
his study investigated the microbial community in a full scale anaerobic baffled reactor and sequencing batch reactor system for oil-produced water treatment in summer and winter. The community structures of fungi and bacteria were analyzed through polymerase chain reaction–denaturing gradient gel electrophoresis and Illumina high-throughput sequencing, respectively. Chemical oxygen demand effluent concentration achieved lower than 50 mg/L level after the system in both summer and winter, however, chemical oxygen demand removal rates after anaerobic baffled reactor treatment system were significant higher in summer than that in winter, which conformed to the microbial community diversity. Saccharomycotina, Fusarium, and Aspergillus were detected in both anaerobic baffled reactor and sequencing batch reactor during summer and winter. The fungal communities in anaerobic baffled reactor and sequencing batch reactor were shaped by seasons and treatment units, while there was no correlation between abundance of fungi and chemical oxygen demand removal rates. Compared to summer, the total amount of the dominant hydrocarbon degrading bacteria decreased by 10.2% in anaerobic baffled reactor, resulting in only around 23% of chemical oxygen demand was removed in winter. Although microbial community significantly varied in the three parallel sulfide reducing bacteria, the performance of these bioreactors had no significant difference between summer and winter.
Fi35943952
International Journal of Engineering Research and Applications (IJERA) is an open access online peer reviewed international journal that publishes research and review articles in the fields of Computer Science, Neural Networks, Electrical Engineering, Software Engineering, Information Technology, Mechanical Engineering, Chemical Engineering, Plastic Engineering, Food Technology, Textile Engineering, Nano Technology & science, Power Electronics, Electronics & Communication Engineering, Computational mathematics, Image processing, Civil Engineering, Structural Engineering, Environmental Engineering, VLSI Testing & Low Power VLSI Design etc.
A HPLC-UV METHOD FOR DETEERMINATION OF THREE PESTICIDES IN WATER
HPLC method is developed and validated for determination of three pesticides (abamectin, imidacloprid,
and β-cyfluthrin) in water. These pesticides are used widely in agriculture for crops protection, and may be
leached to the groundwater. Reversed-phase method with C18 column (5 µm, 250mm × 4.6 mm inner
diameter) using a mobile phase consisting of acetonitrile/water (v:v = 4:1) at a flow rate of 1.5 mL/min and
UV detection at 220 nm was used. This method is validated according to new methods which include
accuracy, precision, linearity and range, limit of detection and limit of quantitation. The current method
exhibits good linearity over the range of 1-1000 ppb for abamectin, 0.5-1000 ppb for imidacloprid, and
0.4-1000 ppb for ß-cyfluthrin with r2
greater than 0.990. The percentage recovery of the method at three
concentration levels (5, 100, and 1000 ppb) is within 97.6 to 101.5% for the three pesticides. Relative
standard deviation of the area of six replicate injections of each pesticide at three concentration levels (5.0,
100.0, and 1000.0 ppb) was found to be less than 1% which reflect the precision of the method. Limit of
quantitation of the three pesticides using this method is low (1.0, 0.5, and 0.4 ppb) for abamectin,
imidacloprid, and β-cyfluthrin, respectively which enables the determination of these three pesticides in
water at low concentration levels
STUDIES ON TREATMENT OF PHARMACEUTICAL WASTE EFFLUENTS BY POLYMER MATERIALS M...
In the present study, sorption technique was used to achieve the optimum recovery of the pharmaceutical waste from effluents.
The modified urea formaldehyde resin was prepared and mixed with inorganic adsorbent at various proportions. The removal
capabilities of pharmaceutical waste by the prepared composite materials were investigated. Different factors affecting the uptake
such as contact time, pH value and aqueous volume to resin weight ratio have been investigated. The reaction mechanisms and
the optimum conditions for the treatment were deduced in the light of the obtained results.
Keywords: Sorption technique, Pharmaceutical waste, Different factors.
GPR40 TL Paper
This document summarizes the development of efficient protocols for synthesizing 1,2,3,4-tetrahydroisoquinolin-1-ones. Several methods were developed, including the use of Mitsunobu reactions, copper-catalyzed arylations, and SNAr reactions to install various substituents on the core scaffold. These methods proved to be versatile, efficient, and amenable to parallel synthesis, allowing for SAR exploration across different regions of the molecule.
chromatograpgy
This document provides an overview of chromatography. It begins with an introduction that defines chromatography and describes how it separates mixtures based on differences in solubility between components in mobile and stationary phases. The document then covers the history of chromatography, important technical terms, main types categorized by interaction with the stationary phase or physical state of the mobile phase. Applications are discussed in areas like drug development, food testing, and forensics. Advantages are noted as versatility in separation. Disadvantages include temperature sensitivity and ensuring solubility. References are listed at the end.
Supercritical chromatography
SUPERCRITICAL CHROMATOGRAPHY USES SUPERCRITICAL FLUID AS A MOBILE PHASE AND USE FOR ANALYSIS OF PHARMACEUTICAL AND CRUDE DRUGS AND CHEMICALS.
2022 - Removal of Cr(VI) from solution using UiO-66-NH2 prepared in a green w...
The document summarizes a study on using a zirconium-based metal organic framework called UiO-66-NH2 for the removal of hexavalent chromium (Cr(VI)) from aqueous solutions. UiO-66-NH2 was synthesized using a greener approach and characterized. Batch experiments explored the effects of solution pH, adsorbent dosage, salt concentration, contact time, initial Cr(VI) concentration and temperature on adsorption. UiO-66-NH2 was able to efficiently remove Cr(VI) through adsorption and reduction. The maximum adsorption capacity from the Langmuir model was 252 mg/g. Regeneration tests showed UiO-66-NH2 had good regeneration
Analysis of Impurities in Semiconductor-Grade Hydrochloric Acid with the NexI...
This document discusses the analysis of impurities in semiconductor-grade hydrochloric acid (HCl) using inductively coupled plasma mass spectrometry (ICP-MS). HCl is commonly used to clean silicon wafers during semiconductor production, and increasingly stringent purity standards are required. ICP-MS provides the necessary low detection limits for trace metal analysis down to parts-per-trillion levels. However, polyatomic interferences from argon, oxygen, and hydrogen ions must be addressed. The PerkinElmer NexION 2000 ICP-MS uses reaction, cool plasma, and quadrupole modes to remove interferences and achieve detection limits below 1 ng/L for most elements, allowing accurate analysis of impurities in
acs.biomac.5b00657
This document summarizes an investigation into using lysine-functionalized dendrimers as potential detoxification agents for the organophosphate pesticide dichlorvos. Zeroth-, first-, and second-generation polyester dendrimers were synthesized with exactly 4, 8, and 16 lysine groups respectively on their periphery. The dendrimers were found to be water-soluble and showed low toxicity to cell lines. They were also able to efficiently capture dichlorvos, demonstrating their potential as antidotes to maintain acetylcholinesterase activity in cases of organophosphate poisoning.
Metabolomic Profiling of Spent Biomass Of Marine Microalgae, Chlorella vulgaris
OBJECTIVE:
To evaluate the presence of any high value added compounds in the spent biomass of C. vulgaris
To identify the biological activity of the extracted compounds
To evaluate the structure and nature of the compounds using Nuclear Magnetic Resonance Spectroscopy and other analytical techniques.
Development of economically viable methodologies for the simultaneous extraction of by-products from a single set of biomass.
biological activities performed -Total antioxidant capacity, Anti bacterial activity, Anti-tuberculosis activity, Anti proliferative assay
Effective removal of dye Alizarin Red S using CTAB modified PVA-Alginate boun...
Effective removal of dye Alizarin Red S using CTAB modified PVA-Alginate boun...International journal of scientific and technical research in engineering (IJSTRE)
Present study aims to investigate the efficiency of newly synthesized adsorbent polyvinyl
alcohol-alginate bound nano magnetite microspheres modified with cetyltrimethyl ammonium bromide [PVAANM/CTAB]
in removal of anionic dye ‘Alizarin Red S’ from aqueous medium. The effect of agitation time,
influence of pH, amount of adsorbent, initial dye concentration and temperature were systematically studied by
batch sorption system. Various isotherms and kinetic models have been fitted with experimental data to evaluate
mechanism of adsorption. Characterization of the so-prepared adsorbent was accomplished by FTIR, XRD,
SEM and TEM analysis. The experimental data fitted very well with Freundlich and Temkin isotherm model.
The sorption kinetics follows pseudo second order kinetic model. PVA-ANM/CTAB has been found an effective,
economic, eco-friendly and efficient adsorbent as it showed ≥ 98% removal at pH 8 and could be regenerated
by acetic acid and reused.Lima-2012-Distribution-and-sources-of-aliphat- exemplo- sergipe-brasil (2).pdf
This study analyzed aliphatic hydrocarbons in surface sediments from the Sergipe River estuarine system in Brazil. Aliphatic hydrocarbon concentrations ranged from 9.9 to 30.8 micrograms per gram of dry sediment. Carbon preference index values indicated petrogenic input at two sites, while an unresolved complex mixture was found at seven of the nine sites, suggesting multiple organic matter sources. Overall the results found a mix of natural and anthropogenic hydrocarbon inputs to the sediments, despite petroleum exploration and urban/industrial activities in the region.
2.pdf
The document summarizes a study that isolated and identified biosurfactant producing bacteria from Iranian oil wells. One strain, identified as Bacillus sp. NO.4, showed high salt tolerance and biosurfactant production ability over a wide pH range. Its maximum biomass production was achieved after 60 hours. GC and HPLC analysis showed the strain had the ability to degrade hydrocarbons in crude oil and completely degrade chrysene and fluorine. The isolated strains demonstrated potential for removing oil pollutants and enhanced oil recovery applications.
Similar to RHAMNOLIPID PURIFICATION USING UPLC-MS/MS (20)
TLC Separation of Cephalosporins on Stannic Arsenate Layers
TLC Separation of Cephalosporins on Stannic Arsenate Layers
microbial community structure of polluted river sediments
microbial community structure of polluted river sediments
Synthesis, Characterization and Antibacterial Activity of New Complexes of So...
Synthesis, Characterization and Antibacterial Activity of New Complexes of So...
Microchimica Acta Volume 84 issue 5-6 1984 [doi 10.1007_bf01197162] G. A. Mil...
Microchimica Acta Volume 84 issue 5-6 1984 [doi 10.1007_bf01197162] G. A. Mil...
A HPLC-UV METHOD FOR DETEERMINATION OF THREE PESTICIDES IN WATER
A HPLC-UV METHOD FOR DETEERMINATION OF THREE PESTICIDES IN WATER
STUDIES ON TREATMENT OF PHARMACEUTICAL WASTE EFFLUENTS BY POLYMER MATERIALS M...
STUDIES ON TREATMENT OF PHARMACEUTICAL WASTE EFFLUENTS BY POLYMER MATERIALS M...
2022 - Removal of Cr(VI) from solution using UiO-66-NH2 prepared in a green w...
2022 - Removal of Cr(VI) from solution using UiO-66-NH2 prepared in a green w...
Analysis of Impurities in Semiconductor-Grade Hydrochloric Acid with the NexI...
Analysis of Impurities in Semiconductor-Grade Hydrochloric Acid with the NexI...
Metabolomic Profiling of Spent Biomass Of Marine Microalgae, Chlorella vulgaris
Metabolomic Profiling of Spent Biomass Of Marine Microalgae, Chlorella vulgaris
Effective removal of dye Alizarin Red S using CTAB modified PVA-Alginate boun...
Effective removal of dye Alizarin Red S using CTAB modified PVA-Alginate boun...
Lima-2012-Distribution-and-sources-of-aliphat- exemplo- sergipe-brasil (2).pdf
Lima-2012-Distribution-and-sources-of-aliphat- exemplo- sergipe-brasil (2).pdf
Recently uploaded
Evidence of Jet Activity from the Secondary Black Hole in the OJ 287 Binary S...
Wereport the study of a huge optical intraday flare on 2021 November 12 at 2 a.m. UT in the blazar OJ287. In the binary black hole model, it is associated with an impact of the secondary black hole on the accretion disk of the primary. Our multifrequency observing campaign was set up to search for such a signature of the impact based on a prediction made 8 yr earlier. The first I-band results of the flare have already been reported by Kishore et al. (2024). Here we combine these data with our monitoring in the R-band. There is a big change in the R–I spectral index by 1.0 ±0.1 between the normal background and the flare, suggesting a new component of radiation. The polarization variation during the rise of the flare suggests the same. The limits on the source size place it most reasonably in the jet of the secondary BH. We then ask why we have not seen this phenomenon before. We show that OJ287 was never before observed with sufficient sensitivity on the night when the flare should have happened according to the binary model. We also study the probability that this flare is just an oversized example of intraday variability using the Krakow data set of intense monitoring between 2015 and 2023. We find that the occurrence of a flare of this size and rapidity is unlikely. In machine-readable Tables 1 and 2, we give the full orbit-linked historical light curve of OJ287 as well as the dense monitoring sample of Krakow.
JAMES WEBB STUDY THE MASSIVE BLACK HOLE SEEDS
The pathway(s) to seeding the massive black holes (MBHs) that exist at the heart of galaxies in the present and distant Universe remains an unsolved problem. Here we categorise, describe and quantitatively discuss the formation pathways of both light and heavy seeds. We emphasise that the most recent computational models suggest that rather than a bimodal-like mass spectrum between light and heavy seeds with light at one end and heavy at the other that instead a continuum exists. Light seeds being more ubiquitous and the heavier seeds becoming less and less abundant due the rarer environmental conditions required for their formation. We therefore examine the different mechanisms that give rise to different seed mass spectrums. We show how and why the mechanisms that produce the heaviest seeds are also among the rarest events in the Universe and are hence extremely unlikely to be the seeds for the vast majority of the MBH population. We quantify, within the limits of the current large uncertainties in the seeding processes, the expected number densities of the seed mass spectrum. We argue that light seeds must be at least 103 to 105 times more numerous than heavy seeds to explain the MBH population as a whole. Based on our current understanding of the seed population this makes heavy seeds (Mseed > 103 M⊙) a significantly more likely pathway given that heavy seeds have an abundance pattern than is close to and likely in excess of 10−4 compared to light seeds. Finally, we examine the current state-of-the-art in numerical calculations and recent observations and plot a path forward for near-future advances in both domains.
在线办理(salfor毕业证书)索尔福德大学毕业证毕业完成信一模一样
学校原件一模一样【微信：741003700 】《(salfor毕业证书)索尔福德大学毕业证》【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
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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】
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◇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
Describing and Interpreting an Immersive Learning Case with the Immersion Cub...
Current descriptions of immersive learning cases are often difficult or impossible to compare. This is due to a myriad of different options on what details to include, which aspects are relevant, and on the descriptive approaches employed. Also, these aspects often combine very specific details with more general guidelines or indicate intents and rationales without clarifying their implementation. In this paper we provide a method to describe immersive learning cases that is structured to enable comparisons, yet flexible enough to allow researchers and practitioners to decide which aspects to include. This method leverages a taxonomy that classifies educational aspects at three levels (uses, practices, and strategies) and then utilizes two frameworks, the Immersive Learning Brain and the Immersion Cube, to enable a structured description and interpretation of immersive learning cases. The method is then demonstrated on a published immersive learning case on training for wind turbine maintenance using virtual reality. Applying the method results in a structured artifact, the Immersive Learning Case Sheet, that tags the case with its proximal uses, practices, and strategies, and refines the free text case description to ensure that matching details are included. This contribution is thus a case description method in support of future comparative research of immersive learning cases. We then discuss how the resulting description and interpretation can be leveraged to change immersion learning cases, by enriching them (considering low-effort changes or additions) or innovating (exploring more challenging avenues of transformation). The method holds significant promise to support better-grounded research in immersive learning.
Discovery of An Apparent Red, High-Velocity Type Ia Supernova at 𝐳 = 2.9 wi...
We present the JWST discovery of SN 2023adsy, a transient object located in a host galaxy JADES-GS
+
53.13485
−
27.82088
with a host spectroscopic redshift of
2.903
±
0.007
. The transient was identified in deep James Webb Space Telescope (JWST)/NIRCam imaging from the JWST Advanced Deep Extragalactic Survey (JADES) program. Photometric and spectroscopic followup with NIRCam and NIRSpec, respectively, confirm the redshift and yield UV-NIR light-curve, NIR color, and spectroscopic information all consistent with a Type Ia classification. Despite its classification as a likely SN Ia, SN 2023adsy is both fairly red (
�
(
�
−
�
)
∼
0.9
) despite a host galaxy with low-extinction and has a high Ca II velocity (
19
,
000
±
2
,
000
km/s) compared to the general population of SNe Ia. While these characteristics are consistent with some Ca-rich SNe Ia, particularly SN 2016hnk, SN 2023adsy is intrinsically brighter than the low-
�
Ca-rich population. Although such an object is too red for any low-
�
cosmological sample, we apply a fiducial standardization approach to SN 2023adsy and find that the SN 2023adsy luminosity distance measurement is in excellent agreement (
≲
1
�
) with
Λ
CDM. Therefore unlike low-
�
Ca-rich SNe Ia, SN 2023adsy is standardizable and gives no indication that SN Ia standardized luminosities change significantly with redshift. A larger sample of distant SNe Ia is required to determine if SN Ia population characteristics at high-
�
truly diverge from their low-
�
counterparts, and to confirm that standardized luminosities nevertheless remain constant with redshift.
快速办理(UAM毕业证书)马德里自治大学毕业证学位证一模一样
学校原件一模一样【微信：741003700 】《(UAM毕业证书)马德里自治大学毕业证学位证》【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
CLASS 12th CHEMISTRY SOLID STATE ppt (Animated)
Description:
Dive into the fascinating realm of solid-state physics with our meticulously crafted online PowerPoint presentation. This immersive educational resource offers a comprehensive exploration of the fundamental concepts, theories, and applications within the realm of solid-state physics.
From crystalline structures to semiconductor devices, this presentation delves into the intricate principles governing the behavior of solids, providing clear explanations and illustrative examples to enhance understanding. Whether you're a student delving into the subject for the first time or a seasoned researcher seeking to deepen your knowledge, our presentation offers valuable insights and in-depth analyses to cater to various levels of expertise.
Key topics covered include:
Crystal Structures: Unravel the mysteries of crystalline arrangements and their significance in determining material properties.
Band Theory: Explore the electronic band structure of solids and understand how it influences their conductive properties.
Semiconductor Physics: Delve into the behavior of semiconductors, including doping, carrier transport, and device applications.
Magnetic Properties: Investigate the magnetic behavior of solids, including ferromagnetism, antiferromagnetism, and ferrimagnetism.
Optical Properties: Examine the interaction of light with solids, including absorption, reflection, and transmission phenomena.
With visually engaging slides, informative content, and interactive elements, our online PowerPoint presentation serves as a valuable resource for students, educators, and enthusiasts alike, facilitating a deeper understanding of the captivating world of solid-state physics. Explore the intricacies of solid-state materials and unlock the secrets behind their remarkable properties with our comprehensive presentation.
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Class 10 human eye notes physics
Handwritten best quality
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Storagedeteriorationisanyformoflossinquantityandqualityofbio-materials.
Themajorcausesofdeteriorationinstorage
•Physical
•Biological
•Mechanical
•Chemical
Storageonlypreservesquality.Itneverimprovesquality.
Itisadvisabletostartstoragewithqualityfoodproduct.Productwithinitialpoorqualityquicklydepreciates
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Classification
Metal ion ion indicators
Masking and demasking reagents
Estimation of Magnisium sulphate
Calcium gluconate
Complexometric Titration/ chelatometry titration/chelating titration, introduction, Types-
1.Direct Titration
2.Back Titration
3.Replacement Titration
4.Indirect Titration
Masking agent, Demasking agents
formation of complex
comparition between masking and demasking agents,
Indicators/Metal ion indicators/ Metallochromic indicators/pM indicators,
Visual Technique,PM indicators (metallochromic), Indicators of pH, Redox Indicators
Instrumental Techniques-Photometry
Potentiometry
Miscellaneous methods.
Complex titration with EDTA.
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Aleš Zamuda: Randomised Optimisation Algorithms in DAPHNE .
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https://ashpc.eu/
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Microbial interaction
Microorganisms interacts with each other and can be physically associated with another organisms in a variety of ways.
One organism can be located on the surface of another organism as an ectobiont or located within another organism as endobiont.
Microbial interaction may be positive such as mutualism, proto-cooperation, commensalism or may be negative such as parasitism, predation or competition
Types of microbial interaction
Positive interaction: mutualism, proto-cooperation, commensalism
Negative interaction: Ammensalism (antagonism), parasitism, predation, competition
I. Mutualism:
It is defined as the relationship in which each organism in interaction gets benefits from association. It is an obligatory relationship in which mutualist and host are metabolically dependent on each other.
Mutualistic relationship is very specific where one member of association cannot be replaced by another species.
Mutualism require close physical contact between interacting organisms.
Relationship of mutualism allows organisms to exist in habitat that could not occupied by either species alone.
Mutualistic relationship between organisms allows them to act as a single organism.
Examples of mutualism:
i. Lichens:
Lichens are excellent example of mutualism.
They are the association of specific fungi and certain genus of algae. In lichen, fungal partner is called mycobiont and algal partner is called
II. Syntrophism:
It is an association in which the growth of one organism either depends on or improved by the substrate provided by another organism.
In syntrophism both organism in association gets benefits.
Compound A
Utilized by population 1
Compound B
Utilized by population 2
Compound C
utilized by both Population 1+2
Products
In this theoretical example of syntrophism, population 1 is able to utilize and metabolize compound A, forming compound B but cannot metabolize beyond compound B without co-operation of population 2. Population 2is unable to utilize compound A but it can metabolize compound B forming compound C. Then both population 1 and 2 are able to carry out metabolic reaction which leads to formation of end product that neither population could produce alone.
Examples of syntrophism:
i. Methanogenic ecosystem in sludge digester
Methane produced by methanogenic bacteria depends upon interspecies hydrogen transfer by other fermentative bacteria.
Anaerobic fermentative bacteria generate CO2 and H2 utilizing carbohydrates which is then utilized by methanogenic bacteria (Methanobacter) to produce methane.
ii. Lactobacillus arobinosus and Enterococcus faecalis:
In the minimal media, Lactobacillus arobinosus and Enterococcus faecalis are able to grow together but not alone.
The synergistic relationship between E. faecalis and L. arobinosus occurs in which E. faecalis require folic acid
Summary Of transcription and Translation.pdf
Hello Everyone Here We are Sharing You with The process of protien Synthesis in very short points you will be Able to understand It Very well
Applied Science: Thermodynamics, Laws & Methodology.pdf
When I was asked to give a companion lecture in support of ‘The Philosophy of Science’ (https://shorturl.at/4pUXz) I decided not to walk through the detail of the many methodologies in order of use. Instead, I chose to employ a long standing, and ongoing, scientific development as an exemplar. And so, I chose the ever evolving story of Thermodynamics as a scientific investigation at its best.
Conducted over a period of >200 years, Thermodynamics R&D, and application, benefitted from the highest levels of professionalism, collaboration, and technical thoroughness. New layers of application, methodology, and practice were made possible by the progressive advance of technology. In turn, this has seen measurement and modelling accuracy continually improved at a micro and macro level.
Perhaps most importantly, Thermodynamics rapidly became a primary tool in the advance of applied science/engineering/technology, spanning micro-tech, to aerospace and cosmology. I can think of no better a story to illustrate the breadth of scientific methodologies and applications at their best.
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RHAMNOLIPID PURIFICATION USING UPLC-MS/MS
- 1. Insert your information hereIntroduction Results References Biousurfactants are surface-active agents, whose potential application range includes the use in bioremediation of hydrocarbon contaminated soils. (Behrens et al. 2016). Rhamnolipids (RLs), the most studied type of biosurfactants, makes hydrocarbons soluble for degradation through cell activity. RL diversity arises from the heterogeneous congener mixtures synthesized which can vary in alkyl chain length ranging from C8 to C14 and their isomers for mono or di-rhamnolipids, raising more than 60 different congeners. The aim of this work was to know the diversity of the RL congeners produced by the Pseudomonas aeruginosa 6K-11 strain and detected using ultra pressure liquid chromatography tandem mass spectrometry (UPLC-MS/MS) method. Purification and determination of Rhamnolipid congeners through ultra-performance liquid chromatography tandem mass spectrometry (UPLC-MS/MS), employing corn oil as carbon source M.V.G. Alván,K.K.Valladares,D.G.Martinez,F.Merino,S.Gutierrez. U.N.M.S.M.-LaboratoryofMicrobiologyand MicrobialBiotechnology.Lima-PE mgracial13@gmail.com Methods Results MONO- RHAMNOLIPID CONGENER TRANSITION % ABUNDANCE SEP-SN AMB-SN PA-T Rha-C8-C10 475 - 305 0 0 1.90 Rha-C10-C8 475 - 333 0 0.00 2.03 Rha-C10-C10 503 - 333 0 82.87 80.61 Rha-C10-C12:1 529 - 333 0 8.57 8.26 Rha-C121:-C10 529 - 359 0 0 0.20 Rha-C10-C12 531 - 333 0 8.55 5.18 Rha-C12-C10 531 - 361 0 0 1.81 Total 0 100% 100% DI-RHAMNOLIPID CONGENER Rha-Rha-C8-C10 621 - 451 0 1.26 1.15 Rha-Rha-C10-C8 621 - 479 59.04 1.99 1.36 Rha-Rha-C10-C10 649 - 479 40.96 68.44 74.42 Rha-Rha-C10-C12:1 675 - 479 0 9.73 6.54 Rha-Rha-C12:1-C10 675 - 505 0 0 0.22 Rha-Rha-C10-C12 677 - 479 0 14.76 12.01 Rha-Rha-C12-C10 677 - 507 0 3.83 4.30 Total 100% 100% 100% Conclusion Table 1. % Relative abundance was calculated based on the individual congener peak area divided by the sum total area for all RLs for either mono- or di- RL fractions as per current practice for published literature in this area. This study showed that the congener produced and the nitrogen source are not related. Also, the best method to purify rhamnolipids depends on the purpose of the research, since the purification through acid precipitation is cost effective, fast and the 14 congeners are obtained, but there is still contaminating molecules. On the other hand, adsorption and ion exchange chromatography reduce the abundance of contaminating molecules and, in the case of using both techniques, 2 rhamnolipids congeners are obtained. 0 10 20 30 40 50 60 70 Rha-Rha-C10-C8 Rha-Rha-C8-C10 Rha-C10-C8 Rha-C8-C10 Rha-Rha-C10-C10 Rha-C10-C10 Rha-Rha-C10-C12:1 Rha-Rha-C12:1-C10 Rha-C10-C12:1 Rha-C121:-C10 Rha-Rha-C10-C12 Rha-Rha-C12-C10 Rha-C12-C10 Rha-C10-C12 % ABUNDANCE RLCONGENER RL Congeners detected using UPLC MS/MS PA-T AMB-SN SEP-SN Graphic 1. Abundance percentage of RL congener detected in different samples. PA-T: tryptone as nitrogen source and purification with acid precipitation method. AMB-SN: Sodium Nitrate as nitrogen source, and purified trough adsorption chromatography. SEP-SN: Sodium Nitrate as nitrogen source, and purified trough adsorption and ion exchange chromatography.Rudden, M.2015. Applied microbiology and biotechnology. Behrens, B.2016.Analytical and bioanalytical chemistry,. Reiling, H 1986 Applied and environmental microbiology Acknowledges: Supported by Proyecto FINCYT under Contract Nº238-IA-2013 Methods SATURDAY - 632