Perchlorate inhibits iodide uptake and may impair thyroid neurodevelopment in infants. Recently, we unambiguously identified the presence of perchlorate all seven brands dairy milk randomly purchased from grocery stores Lubbock, TX. How widespread is milk? 47 samples 11 states 36 human 18 were measured. Iodide was also measured a number samples. detectable 81 82 The breast means were, respectively, 2.0 10.5 μg/L with corresponding maximum values 92 μg/L. present virtually samples, average...

Storm surge associated with Hurricane Katrina and the breach of levees protecting New Orleans, Louisiana allowed floodwaters from Lake Pontchartrain to inundate 80% city. Environmental samples were collected during September 16−18, 2005 determine immediate human wildlife health hazards pathogens toxicants in floodwaters. Baseline information on potential long-term environmental damage resulting contaminants water sediments pumped into was also collected. Concentrations aldrin, arsenic, lead,...

Perchlorate was unambiguously detected by ion chro matography-suppressed conductivity (IC-CD) and/or chromatography−electrospray mass spectrometry (IC-MS) in seven of supermarket milk samples bought randomly Lubbock, TX. Quantitation IC-MS and IC-suppressed detection conjunction with a preconcentration-preelution method provided comparable results. With sample cleanup procedure that involved protein removal ethanol sequential passage though activated alumina C-18 silica, the limit for...

In a new approach to evaluating the oxidative stability of oils and fats, consumption oxygen by sample confined in reactor adjustable temperature is monitored with gas-phase flow injection analysis (FIA) system. Temperature-dependent data are collected low-oxygen-content atmosphere. For variety samples, log(oxygen consumption) linearly related reciprocal absolute (minimum linear r(2) > 0.99). This makes it possible extrapolate temperature-dependent predict samples at other temperatures,...

High-quality development efficiency can comprehensively measure the quality of a region. This study constructed SE-SBM Model and measured Yellow River Basin from 2010 to 2019. In panel regression, periodic effects industrial structure, environmental regulation, their interaction terms on high-quality are analyzed. From perspective threshold effect, we explore possible change development. The results show: (1) 2019, Basin’s watershed segment showed gradient trend. (2) positively impact whole...

To manage the process of human-machine safety collaboration in context intelligent construction coal mines and prevent occurrence interaction accidents. This study explores variables affecting analyzes causal relationships mechanisms action among variables. adopts DEMATEL-ISM method to analyze relationship between factors collaboration. In addition, research further identifies key influencing from a series factors, establishes hierarchical structure model understands mechanism factors. We...

The status of oxidation oil and fat samples is normally judged by their peroxide value (PV), an index that seeks to determine the content measuring how much iodine liberated sample from iodide in acidic medium a specified time period. At levels interest, not only does this approach require considerable analyst skill, method inherently flawed because differences rates at which different peroxides liberate potentially also consumption nascent unsaturated sites. We propose here substantially...

Abstract Rapid population growth has led to increasing demand for water resources. Studies have shown that the application of new technologies can effectively influence and promote citizens save water. The smart sensors monitor household consumption feedback recorded data promptly, thereby influencing family members' water-saving attitudes behaviours. For widespread use future in households, it demonstrate its essential role three aspects: information reduce consumption, measurement helps...

Abstract A quantitative liquid chromatography/electrospray ionization tandem mass spectrometry (LC/ESI‐MS/MS) method was developed for the analysis of explosive, octahydro‐1,3,5,7‐tetranitro‐1,3,5,7‐tetrazocine (HMX). In negative mode, HMX forms an acetate adduct ion [M + CH 3 COO] − , m/z 355, in presence a small amount acetic acid mobile phase. The ESI collision‐induced dissociation (CID) spectrum 355 acquired and transitions → 147 174 were chosen determination samples. Using this...

The traditional traffic concept seems to be unable adapt the problems brought by cities’ rapid development. People must cultivate new modern literacy deal with problems. Based on literacy, this paper constructs a evaluation indicator system including 13 indicators such as rules and mechanical knowledge summarizing relevant literature. We propose an Improved Principal Component Analysis (I-PCA) method, introduce of information contribution sensitivity, optimize empower system. primary...

Abstract At present, many studies have used social survey methods to explore UK water citizens’ perceptions of the sector’s services, but there are few more targeted and systematic studies. This paper mainly displays citizens on services in sector recent years analyses main reasons for different possible strategies. We conduct extensive research from four aspects that highly related services: supply technology application (infrastructure construction) provided by sector; state communication...

In this research, we examine the relationship between customer satisfaction with water and wastewater services, demographic factors, communication utility, perceived trustworthiness. Through a survey of UK public ([Formula: see text]), found that 77% respondents stated they were satisfied their services. Statistical analysis highlighted significant differences in level satisfaction, particularly by age, higher older respondents. We degree to which think utility can be trusted provide...

Abstract Improving citizens' water literacy level has gradually become one of the key elements to solve or alleviate problems, which is great significance in building a social security system and promoting harmonious development man nature. A fusion method—grounded systems analysis based on grounded theory event proposed this study, used explore representation factors construct main category chain through reverse tracking interview data revealing each factor's mechanism. The research results...

Abstract This study proposes an evaluation index system of water literacy levels. Thirty-one provincial capitals in mainland China were selected for the survey. The preliminary results revised to obtain comprehensive value literacy. questionnaire show that score is relatively high, but behavior low; modified are closer actual level urban residents; and has a certain correlation with distribution resources China. research can provide theoretical support China's future work improve citizens’...

Abstract At present, the urban water issue has attracted great attention from government. The transition ‘engineering measures’ to ‘human behaviors’ is a new angle for resources protection in era. In this paper, 12 characterization parameters were obtained based on analysis of characteristics residents' behaviors. Beijing and Shanghai are selected as representative cities north south regions respectively, questionnaire about behaviors, which includes three basic personal indicators, was...

Considering the reward and punishment mechanism of management committee complexity innovation path selection high‐tech general enterprises, this paper constructs an evolutionary game model independent incentive in National Independent Innovation Demonstration Zone China. Meanwhile, equilibrium points strategy are solved for three. In addition, adopts numerical simulation to analyze influence each decision variable on different players’ strategic selections. The results show that (1) initial...

The practice has proven that relying solely on large-scale transportation facilities cannot fundamentally alleviate urban problems. Since the motor vehicle drivers are main participants of transportation, they should improve their knowledge transportation. Moreover, equally cope with This paper establishes an evaluation index system for traffic literacy drivers. In addition, it proposes a method information contribution sensitivity to optimise system. results and achievement this include...

This paper summarizes the relevant literature through content analysis method and combines expert advice. The company built a four‐level indicator including traffic knowledge skills, 13 pilot‐level literacy evaluation indicators system rules mechanical common sense. Analytic Hierarchy Process (AHP) is used to determine weight of each urban driver evaluation, conduct pilot survey motor vehicle drivers in Zhengzhou. results show that value Zhengzhou 72.07, score 77.09, awareness 73.95, skill...

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Natural disaster response is commonly regarded as a dynamic process that reflects intricate relationships between physical and social factors. The resilience of infrastructure impacts the availability emergency resources, while asymmetric resource dependence among cooperation organizations influences effectiveness coordinated response. This study has formulated differential game encompassing three models: autonomous participation, government-led, collaborative These models have been designed...