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High-performance nontarget analysis of halogenated organic compounds in tap water, fly ash, soil and sediment using ultrahigh resolution mass spectrometry and scripting approaches based on Cl/Br-specific search algorithms
This study developed a nontarget analysis method for characterization of known and unknown HOCs in tap water, fly ash, soil and sediment using Fourier transform ion cyclotron resonance mass spectrometry (FT-ICR-MS) with aid of scripting data-processing approaches. The FT-ICR-MS was equipped with an electrospray ionization source operated in negative ion mode, and full scan at a mass resolution around 200,000 was applied. Data screening scripts were developed based on exact mass differences and abundance ratios between neighboring chlorine/bromine isotopologues. Cosine similarity analysis was applied to evaluating similarit...
Source: Analytica Chimica Acta - April 10, 2022 Category: Chemistry Authors: Caiming Tang Guangshi Chen Bin Jiang Jianhua Tan Yutao Liang Hui Lin Yanhong Zeng Xiaojun Luo Bixian Mai Xianzhi Peng Source Type: research

Making and Unmaking a "Bactericidal" Organism: Sterile Surgical Maggots and Organic Antiseptics in Inter-War America
This article charts the popularization of and eventual disengagement with an approach to wound infection control centered on the medical efficacy of living beings (maggots) in 1920s and 1930s America. Baltimore surgeon William Stevenson Baer successfully drew on his wartime experience to promote the use of sterile or "surgical" maggots in the treatment for deep-seated bone infection at this time. This article situates the practices he promoted in the context of President Herbert Hoover's contemporary establishment of the "associative state," thereby drawing out the relevance of the latter to medical governance. In so doing...
Source: Medical History - June 28, 2022 Category: History of Medicine Authors: Tom Quick Source Type: research

In Zimbabwe, drought is driving a hydropower crisis —and a search for alternatives
MUTARE, ZIMBABWE— Normally, the Murahwa Green Market here in this small city near the border with Mozambique bustles with welders, carpenters, and mechanics selling their services. But the market has been deathly quiet in recent weeks, as a prolonged drought has plunged Zimbabwe into a severe energy crisis. Water levels behind Zimbabwe’s main hydropower dam, which produces nearly 70% of the nation’s electricity, have dropped too low to reliably generate power, forcing utility managers to impose rolling blackouts that last for up to 20 hours per day. “We are forced to work at night when electricity is availa...
Source: Science of Aging Knowledge Environment - March 8, 2023 Category: Geriatrics Source Type: research

Sequential application of activated sludge and phytoremediation with aquatic macrophytes on tannery effluents: in search of a complete treatment
Environ Sci Pollut Res Int. 2023 May 19. doi: 10.1007/s11356-023-27718-3. Online ahead of print.ABSTRACTTannery effluents with a high organic matter load (indicated by their COD level) have to be treated before they are discharged, so as to minimize their negative impact on the environment. Using field mesocosm systems, this study evaluated the feasibility of treating such effluents through bioaugmentation with activated sludge, followed by phytoremediation with aquatic macrophytes (Lemnoideae subfamily). Regardless of its quality, the activated sludge was able to remove approximately 77% of the COD from effluents with a l...
Source: Environmental Science and Pollution Research International - May 19, 2023 Category: Environmental Health Authors: Marilina Fernandez Roxana J G ómez Paola S Gonz ález Cintia N Barroso Cintia E Paisio Source Type: research

Global Search Traffic For Crypto At Near 5-Year Low
The global Google search traffic for the organic term “cryptocurrency” is at the lowest point in five years, reflecting a shift in user sentiment. Even though prices of top crypto assets, including Bitcoin, are way above 2018 lows at spot rates, market participants appear apprehensive as interest…#google #googletrends #coinbase
Source: Reuters: Health - September 3, 2023 Category: Consumer Health News Source Type: news

Exposure and health risk assessment of indoor volatile organic compounds in a medical university
This study aimed to investigate the indoor concentrations of these five compounds in different locations on campus and to evaluate possible health risks for faculty members and students in a medical university. We selected 10 locations as sampling sites to conduct 4-h monitoring sessions on weekdays each season during 2019-2020. We used a 6-liter canister to collect air samples and analyzed these five VOCs via gas chromatography with a flame ionization detector. Monte Carlo simulation was performed to evaluate the carcinogenic and noncarcinogenic risks of these five VOCs. We found that dichloromethane was the most highly d...
Source: Environmental Research - June 13, 2022 Category: Environmental Health Authors: Chieh-An Cheng Ting-Chun Ching Shih-Wei Tsai Kai-Jen Chuang Hsiao-Chi Chuang Ta-Yuan Chang Source Type: research

These Drones Could Save Lives in a Disaster  Zone
1. These drones could save lives in a disaster zone. By the University of South Australia 2. Girls education is linked to climate action. Here’s how. By Christina Kwauk and Amanda Braga at the Brookings Institution 3. Ham radio operators are extending a lifeline to the storm-ravaged Caribbean. By Sarah Emerson in Motherboard 4. Can we trust imported organic food? By Scott Thill in Civil Eats 5. Is the world ready for “Kurdexit?” By Steven A. Cook at the Council on Foreign Relations The Aspen Institute is an educational and policy studies organization based in Washington, D.C.
Source: TIME.com: Top Science and Health Stories - September 27, 2017 Category: Consumer Health News Authors: The Aspen Institute Tags: Uncategorized Caribbean Drones Education Five Best Ideas Innovation Kurds organic food Source Type: news

The polygonal model: A simple representation of biomolecules as a tool for teaching metabolism
In this report, we describe the “polygonal model” as a new means of graphically representing biomolecules. This model is based on the use of geometric figures such as open triangles, squares, and circles to represent hydroxyl, carbonyl, and carboxyl groups, respectively. The usefulness of the polygonal model was assessed by undergraduate students in a classroom activity that consisted of “transforming” molecules from Fischer models to polygonal models and vice and versa. The survey was applied to 135 undergraduate Biology and Nursing students. Students found the model easy to use and we noted that it allowed identi...
Source: Biochemistry and Molecular Biology Education - November 13, 2017 Category: Biochemistry Authors: Carlos Francisco Sampaio Bonafe, Jose Ailton Concei ção Bispo, Marcelo Bispo de Jesus Tags: Student Centered Education Source Type: research

Physiology undergraduate degree requirements in the U.S.
Course-level learning objectives and core concepts for undergraduate physiology teaching exist. The next step is to consider how these resources fit into generalizable program-level guidelines for Bachelor of Science (BS) degrees in Physiology. In the absence of program-level guidelines for Physiology degree programs, we compiled a selective internal report to review degree requirements from 18 peer BS programs entitled "Physiology" in the United States (U.S.). There was a range of zero to three required semesters of math, physics, physics laboratory, general biology, biology laboratory, general chemistry, chemistry labora...
Source: AJP: Advances in Physiology Education - November 14, 2017 Category: Universities & Medical Training Authors: VanRyn, V. S., Poteracki, J. M., Wehrwein, E. A. Tags: STAYING CURRENT Source Type: research

Academic socialization as the production and negotiation of social space
This article introduces the concept of academic social space as a useful construct to understand and interpret the academic language socialization of individuals in English second language academic spaces. Academic social space builds on the concepts of community of practice (Lave & Wenger, 1991) and production of space (Lefebvre, 1991). The article then reports on a study that adopted the notion of academic social space to examine the language socialization of one international student in a tertiary institute in New Zealand. Data about this case from various sources including diaries, interviews, class observation...
Source: Linguistics and Education - March 21, 2018 Category: Speech-Language Pathology Source Type: research

Entering a Golden Age of Medical Materials
Materials science is a field that is constantly evolving as technologies advance around us at lightning pace. New trends and developments continue to drive device innovation, but they also push new materials to the forefront as well. Device makers and engineers have made great strides in using these new materials to create exciting new technologies, with recent discoveries made from advances in medical electronics, biomaterials, plastics, and soft materials. Jacqueline Anim is the principal material engineer for Ethicon, a subsidiary of Johnson & Johnson that manufactures surgical systems and instruments. She currently...
Source: MDDI - April 19, 2018 Category: Medical Devices Authors: Kristopher Sturgis Tags: MD & M East (New York) Materials Source Type: news

ASAP Simple and Effective Integration of Green Chemistry and Sustainability Education into an Existing Organic Chemistry Course
Journal of Chemical EducationDOI: 10.1021/acs.jchemed.7b00720
Source: Journal of Chemical Education - May 17, 2018 Category: Chemistry Authors: Brian J. J. Timmer, Fredrik Schaufelberger, Daniel Hammarberg, Johan Franz én, Olof Ramström, Peter Dinér Source Type: research

Academic socialization as the production and negotiation of social space
This article introduces the concept of academic social space as a useful construct to understand and interpret the academic language socialization of individuals in English second language academic spaces. Academic social space builds on the concepts of community of practice (Lave & Wenger, 1991) and production of space (Lefebvre, 1991). The article then reports on a study that adopted the notion of academic social space to examine the language socialization of one international student in a tertiary institute in New Zealand. Data about this case from various sources including diaries, interviews, class observations, field...
Source: Linguistics and Education - July 5, 2018 Category: Speech-Language Pathology Source Type: research