Water chemistry

Thermostable and highly water-soluble polymers are essential for polymer flooding — one of the most effective methods used in the enhanced oil recovery (EOR) in hightemperature (HT) offshore reservoirs. In this research, the copolymerization reaction of acrylamide (AM) and N-vinylpyrrolidone (NVP) monomers were performed via a freeradical mechanism induced by gamma-rays (γ-rays) irradiation.

79p viabigailjohnson 10-06-2022 16 4   Download

Research objectives of the thesis: The thesis was conducted to research and develop a new type of electrode: glass charcoal electrodes modified by flower platinum nano (PtNFs/GC) and to evaluate the properties of fabricated electrodes: electrode structure, morphology, physical and chemical properties.

28p extraenglish 24-05-2021 32 4   Download

Học phần Hóa nước giới thiệu những kiến thức cơ bản về sự hình thành thành phần hoá học của các nguồn nước tự nhiên, quy luật diễn biến của những thành phần hoá học đó; các nguyên lý động học và cân bằng hoá học liên quan đến các quá trình hoá học xảy ra trong các hệ thống nước; phương pháp phân tích định lượng xác định thành phần hoá học của nước và đánh giá chất lượng nguồn nước đó.

13p lovebychance01 17-04-2021 33 2   Download

Studying and orienting applicability to detecting, quantifying separately and simultaneously cadmium, lead in aqueous environment by means of stripping voltammetry method with the desire that the nanostructures of the electrodes help increase the sensitivity of the analytical method.

28p capheviahe26 25-01-2021 31 4   Download

Study the structural, morphological and physicochemical properties of synthetic materials by modern physical and chemical methods such as XRD, FTIR, SEM, TEM, XPS, EDX, BET, TG-DTA, UV -Vis; evaluation of photochemical catalyst using visible light in the decomposition of dyes RR-195, RY-145 on synthetic materials.

27p capheviahe26 25-01-2021 44 3   Download

Fabbrication of electrocatalyst materials on the IrO2 basis for oxygen evolution reaction in proton exchange membrane water electrolyser PEMWE; applying to fabbricated proton exchange membrane water electrolyser PEMWE to produce hydrogen.

26p larachdumlanat129 20-01-2021 25 5   Download

The research using some advanced, environmentally friendly materials such as water-absorbing polymers and soil-binding polymers in potting medium is also a new direction to improve water retention. The study of manufacturing polybags with different degradation time combined with the use of SAP and PAM in substrates of pots to improve some features of the current nursery.

27p larachdumlanat129 20-01-2021 20 2   Download

The study has indicated that MOFs has maintained extensive applications in Biological imaging and sensing, Drug delivery systems, Methane storage, Semiconductors, Bio-mimetic mineralization, Carbon capture, Desalination/ion separation, Water vapor capture and Ferroelectrics and Multiferroics.

20p tocectocec 25-05-2020 21 1   Download

The objectives of the thesis: Fabrication of diaphragm sensing material based on phenyl conductive polymer has stability and high sensitivity with heavy metal cations, which is used to identify and analyze heavy metal traces in water. Mời các bạn tham khảo!

26p xacxuoc4321 08-07-2019 48 6   Download

The thesis has found a new method to increase the pore size of mesoporous carbon by filling the liquid glass into the pore of the template (silica SBA-15) before impregnating the carbon presource to limit the penetration of carbon sealed the pore system of SBA-15. Stability of mesoporous carbon is increases due to silicon are partially retained in materials. This technique opens the way of synthesis of mesoporous carbon as an adsorbent with a desired pore size and stability.

28p xacxuoc4321 08-07-2019 42 7   Download

Department of Chemistry ‘IFM’, University of Torino, Italy; 2Department of Biology, University ‘Roma Tre’, Rome, Italy; 3Department of Structural and Functional Biology, University of Insubria, Italy Haem binding to human serum albumin (HSA) endows the protein with peculiar spectroscopic properties. Here, the effect of ibuprofen and warfarin on the spectroscopic properties of ferric haem –human serum albumin (ferric HSA–haem) and of ferrous nitrosylated haem –human serum albumin (ferrous HSA –haem-NO) is reported.

7p system191 01-06-2013 47 3   Download

I. Pronunciation: Khoanh tròn từ có phần gạch dưới phát âm khác với những từ còn lại: (1ms) Câu 1: A. cooked B. stopped C. watered D. finished Câu 2: A. share B. atmosphere C. care D. everywhere Câu 3: A. floor B. usually C. casual D. poor Câu 4: A. championship B. school C. chemistry D. Christmas II. Grammar and vocabulary: Chọn đáp án tốt nhất: (4ms) Câu 5: They were sent to a local………right after their parents' death. A. prison B. hospital C. park D. orphanage Câu 6: My son didn't go to the theatre .......he was 16 years old. A. since B. for C. after D. until...

5p rrtrungrr11 27-03-2013 267 64   Download

The water permeability of biological membranes has been a long-standing problem in physiology, but the proteins responsible for this remained unknown until discovery of the aquaporin 1 (AQP1) water channel protein. Peter Agre received Nobel prize in Chemistry in 2003 for this discovery.

32p mobifone23 21-01-2013 45 6   Download

Aldehydes and Ketones – Form acetals and ketals respectively with normal methanol-containing reagents – Water formed in this reaction will then be titrated to give erroneously high water results – With aldehydes a second side reaction can take place, consuming water, which can lead to sample water content being underestimated – Replacing methanol with another solvent can solve the difficulties (commercial reagents are widely available)

14p qdung92ct 03-07-2012 73 6   Download

Special Topics I. Selenium Ecotoxicology II. Arsenic in Drinking Water Principles of Environmental Toxicology Instructor: Gregory Möller, Ph.D. University of Idaho. Examine the chemistry of selenium in inorganic and organic molecules. Understand the role of seleno-amino acids in the expression of selenium toxicity in plant and animal systems. Examine chronic selenium toxicosis (selenosis). Understand the role of selenium in reproductive failure.

11p nguyenvanquan037 07-01-2011 92 10   Download

Over the last two centuries, human activity has transformed the chemistry of Earth’s water and air, altered the face of Earth itself, and rewoven the web of life. Why has this ...

8p bacenvirgeo 27-11-2010 197 14   Download

Catalytic oxidation of organic compounds is an extremely important field of chemistry, spanning the range from biological oxidations to large scale industrial production of commodity chemicals. However, many of these transformations can hardly be classified as organometallic reactions, since the catalysts (often simple metal salts) and the intermediates can be rather regarded as coordination complexes than organometallic compounds.

7p boyminsk 10-06-2010 103 18   Download

A personal look at the history of aqueous organometallic catalysis “Organometallic chemistry deals with moisture sensitive compounds therefore all manipulations should be carried out under strictly anhydrous conditions” – this was the rule of thumb ever since the preparation of the first organometallic compounds. Not as if there were no isolated examples of water-stable organometallics from the very beginning, in fact Zeise`s salt, was prepared as early as 1827. Nevertheless, it is true, that compounds having highly polarized M-C, M-H etc.

10p boyminsk 10-06-2010 116 6   Download