Water activity

In this research, we fabricated α-mangostin-loaded liposomes from soybean lecithin and cholesterol to enhance the solubility in water of α-mangostin and reduce side effects in the treatment of cancer.

11p viamancio 04-06-2024 4 0   Download

Ebook "Threats to the quality of groundwater resources: Prevention and control" focuses on scientific and technological aspects of groundwater-resources assessment and surveillance. It describes relevant risks and investigates selected techniques for the monitoring and mitigation of the individuated threats to groundwater quality.

326p giangdongdinh 28-05-2024 2 1   Download

Continued part 1, part 2 of ebook "Design with energy: The conservation and use of energy in buildings" provides readers with contents including: Chapter 5 - Active solar heating; Chapter 6 - Space heating and ventilation; Chapter 7 - Thermal storage; Chapter 8 - Wind energy; Chapter 9 - Water-supply systems; Chapter 10 - Waste disposal and utilization;...

208p dongmelo 20-05-2024 4 1   Download

Part 2 book "Microbiology - A laboratory manual" includes contents: Cultivation and enumeration of bacteriophages, isolation of coliphages from raw sewage, propagation of isolated bacteriophage cultures; physical agents of control - moist heat; chemical agents of control - chemotherapeutic agents, determination of penicillin activity in the presence and absence of penicillinase, chemical agents of control - disinfectants and antiseptics,... and other contents.

280p dianmotminh01 17-05-2024 3 2   Download

This study presents some research results on the relationship between the geological environment of the surface layer and the level of modern tectonic activity in the sea waters of the Hoi An - Cua Dai area based on the interpretation of high-resolution shallow seismic data combined with the surface sediments’ grainsize analysis and other available data sources. The results show that the surface geological environment in the coastal waters North of the Thu Bon river fault is influenced by modern tectonic activities, believed to be a part of causing geological catastrophic events.

10p dianmotminh02 03-05-2024 3 1   Download

Biodegradable “green” and safe substitutes to minimize environmental and health risks are drawing extensive attention for research interest. This research aims to create a water-soluble cationic starch-grafted biodegradable polymer that can be used as a flocculant. As polymers are strong molecules that carry charges, they are effective flocculants. Saturated polymer chains do not change the pH value on adding to wastewater.

8p dianmotminh02 03-05-2024 3 1   Download

In this study, a simple technique combining conventional electrospinning and facile gas–solid reaction for fabricating PAN/Ag2S nanofibers was presented and tested. The obtained fibers would have excellent properties such as the flexibility of PAN nanofibers and efficient photocatalysis of the Ag2S nanoshells under visible light. The photocatalytic elimination of RhB in water was used to evaluate the activity and application of the synthesized material under visible light irradiation.

11p dianmotminh02 03-05-2024 4 2   Download

Ebook "Amorphous drugs: Benefits and challenges" explains theoretical and technological aspects of amorphous drug formulations. It is intended for all those wishing to increase their knowledge in the field of amorphous pharmaceuticals. Conversion of crystalline material into the amorphous state, as described in this book, is a way to overcome limited water solubility of drug formulations, in this way enhancing the chemical activity and bioavailability inside the body.

234p tracanhphuonghoa1007 22-04-2024 6 3   Download

In this study, the objective was to employ experimental design in order to optimize the efficiency of diesel oil removal from water using activated carbon sourced from rambutan peel. A central composite design was utilized to investigate the impact of contact time, adsorbent dosage, initial oil concentration, and pH on both the removal efficiency and oil adsorption capacity across 30 different experimental designs.

12p vijaychest 24-04-2024 6 2   Download

This study aims to analyze the influence of economic activities, especially the various land use types on the water quality of Hieu river in Chau Hanh - a commune in mountainous areas of Vietnam based on the water quality indicator data with the characteristics of riparian buffer.

8p vilarry 01-04-2024 3 1   Download

This study was designed to extract a high yield of polysaccharides from the M. smilacifolium trunk and characterize it. As a result, the maximum yield of the polysaccharides of 5.13 ± 0.05% was obtained with an extraction time of three hours, extraction temperature of 100 oC, the ratio of water to sample of 1:50 as extraction solution, extraction number of times 3, and the ratio of ethanol to extract volume 5:1 (v/v).

9p viritesh 02-04-2024 6 1   Download

Ebook "Controlled synthesis of Pt–Ni bimetallic catalysts and study of their catalytic properties" presents four pioneering studies: (1) syntheses of water-soluble octahedral, truncated octahedral, and cubic Pt–Ni nanocrystals and the study of their structure-activity relationship in model hydrogenation reactions; (2) a strategy for designing a concave Pt–Ni alloy using controllable chemical etching; (3) defect-dominated shape recovery of nanocrystals, which is a new synthesis strategy for trimetallic catalysts; (4) a sophisticated construction of Au islands on Pt−Ni, which is an ideal trim...

119p tudohanhtau1006 29-03-2024 5 1   Download

The study aims to assess the diesel oil adsorption capacity of activated carbon derived from rambutan peel, a prevalent agricultural by-product in Vietnam. The adsorption process will be investigated using various adsorption isotherms (Langmuir, Freundlich, Temkin, Dubin-Radushkevich), adsorption kinetics (pseudo-first order and pseudo-second order).

18p viellison 28-03-2024 4 1   Download

Aerobic granular sludge has been applied in batch reactors SBR since the 1970s and it has been extensively studied with different substances in the following years. Compared with activated sludge, aerobic granular sludge has a good granular structure, high biomass retention capacity, and ability to remove more toxic compounds in wastewater.

4p viellison 28-03-2024 8 1   Download

Ebook "Lake kinneret: Ecology and management" expands on a previous monograph on Lake Kinneret published in 1978 and capitalizes on the outcome of more than 40 years of research and monitoring activities. These were intensively integrated with lake management aimed at sustainable use for supply of drinking water, tourism, recreation and fishery. The book chapters are aimed at the limnological community, aquatic ecologists, managers of aquatic ecosystems and other professionals.

674p manmanthanhla0201 26-02-2024 8 1   Download

Ebook "Food emulsifiers and their applications (Second edition)" has focused on the design and application of emulsifiers as versatile food ingredients. The second edition has updated and expanded applications, from both theoretical and practical perspectives. The first three chapters describe design, synthesis, analysis, and commercial preparation of emulsifiers. Synergistic and antagonistic interactions with other food ingredients, such as carbohydrates, proteins, and water, are discussed in the next three chapters.

433p manmanthanhla0201 27-02-2024 2 1   Download

Ebook "An introduction to the physical chemistry of food" introduces the physical chemistry essential to understanding the behavior of foods. Starting with the simplest model of molecules attracting and repelling one another while being moved by the randomizing effect of heat, the laws of thermodynamics are used to derive important properties of foods such as flavor binding and water activity.

192p nhanphanguyet 28-01-2024 4 2   Download

In ebook "Catalysis with supported size-selected Pt clusters: Fundamental UHV and applied ambient experiments" Florian Schweinberger investigates the influence of the precise size of catalytically active species on reactivity. In order to do this he carries out studies both in UHV and under ambient conditions for supported, size-selected Platium clusters (8-68 atoms). Schweinberger probed the electronic structure, adsorption properties and reactivity of two olefins on surfaces and Pt clusters in the submonolayer range.

231p nhanphanguyet 28-01-2024 4 2   Download

Ebook "The microbiological safety of low water activity foods and spices" provides an understanding of the microbial challenges to the safety of low aw foods, and a historic backdrop to the paradigm shift now highlighting low aw foods as vehicles for foodborne pathogens. Up-to-date facts and figures of foodborne illness outbreaks and product recalls are included. Special attention is given to the uncanny ability of Salmonella to persist under dry conditions in food processing plants and foods.

437p nhanphanguyet 28-01-2024 5 2   Download

Ebook "Food nanoscience and nanotechnology" have increased the nutritional and functional properties of a number of food products and have aided in food preservation through the addition of antimicrobials or the reduction of water activity. These and many other applications have emerged in recent years to transform food science and technology. This book proposes to look at some of these applications and their effect on food production and innovation.

307p nhanphanguyet 28-01-2024 6 2   Download