Zhongguo Li Articles | Environmental XPRT

Soil CO2 Flux Measurements -- Atmospheric CO2 Profile Measurements Using the LI-8100/8150 System

The LI-8100 Automated Soil CO2 Flux System has been designed to help answer the spatial and/or temporal variability questions that arise when performing soil CO2 flux measurements. When using the LI-8150 Multiplexer with the LI-8100 Analyzer Control Unit, atmospheric CO2 profile measurements can be performed in addition to soil CO2 flux measurements, with minimal added cost. This application note ...

Jan. 1, 2006

By LI-COR

Soil CO2 Flux Measurements -- Using the LI-8100 System to Collect Air Samples for Estimating Soil Trace Gas Flux

Air samples can be collected from the same air stream used to measure soil CO2 flux with the LI-8100 Automated Soil CO2 Flux System, for estimating the flux of trace gas, such as methane (CH4), ammonia (NH3), nitrous oxide (N2O), isotopic species, etc. This application note describes a simple method for obtaining air samples from the LI-8100 in the field. The concentration of the gas species for ...

Jan. 1, 2006

By LI-COR

Heavy metals and clay minerals in surface sediments from the Mazatlan Bay, Mexican subtropical Pacific coast

To know the geochemical behaviour of Al, Cd, Cr, Cu, Fe, Li, Mn, Ni and Zn, their sources, distribution patterns and association with sedimentological factors (organic carbon and carbonate contents, grain size and clay mineralogy of the sediments), 29 surface sediment samples were collected from the Mazatlan Bay, Mexico. In addition to the determination of the concentration of these variables by ...

Mar. 3, 2006

By Inderscience Publishers

The Connecticut Nitrogen Trading Program: lessons learned and the challenges that remain to achieve the TMDL for Long Island Sound

Long Island Sound’s (LIS) most pressing water quality problem is caused by over-enrichment of nutrients, specifically nitrogen, which leads to greatly reduced levels of dissolved oxygen in the bottom waters of western LIS. Primary sources of nitrogen include municipal wastewater treatment plant discharges (also known as publicly owned treatment works or POTWs), atmospheric deposition and runoff ...

Oct. 13, 2007

By Water Environment Federation (WEF)

Use of Enhanced Nebulizer Systems for Very Hard Water Analysis Using ICP-AES Detection

Abstract Abstract: Groundwaters Groundwaters from certain certain regions regions (ex. southern southern England, England, southern southern Germany) Germany) can be very hard, as evidenced evidenced by Ca, Fe, K, Mg, and Na concentrations concentrations above 200 mg/L. This work will examine examine the use of two different different enhanced enhanced nebulizer nebulizer systems systems for the ...

Apr. 20, 2016

By Teledyne CETAC Technologies

UK and China sign deal to advance low carbon co-operation

Chris Huhnen and Li Keqiang sign agreement to promote low-carbon knowledge sharing between the UK and the low carbon pilot provinces. The UK signed yesterday an agreement with China in an attempt to accelerate low carbon growth in both countries through the exchange of clean technologies, expertise and policy. Chinese Vice-Premier Li Keqiang signed a Memorandum of Understanding (MoU) with Energy ...

Jan. 12, 2011

By Vital Energi

Development of a low-rise industrial source dispersion model

In Japan, with amendment of the Air Pollution Control Law in May 1996, various substances, including benzene and trichloroethylene, were newly designated as hazardous air pollutants, and environmental standards were established. In this situation, it is necessary to develop a dispersion model that is applicable to environmental impact assessment of industrial areas with a complex of factory ...

Sep. 1, 2004

By Inderscience Publishers

Soft or hard market, what lies ahead

The past three years for the U.S. economy have been some of the worst in recent memory. Companies have struggled for survival resulting in layoffs, acquisitions, bankruptcies, restructuring and, in many unfortunate cases, the closing of shop doors. This trend has not been lost on insurance carriers, and is one of the primary reasons we are currently experiencing a “soft market.” ...

May 1, 2011

By Waste Advantage Magazine

Biolink Life Sciences. Inc., USA - Case Study

Very durable, customers are happy with our service quality. Customer name Ph. D. Jie Li Company / Institution Biolink Life Sciences. Inc., USA Product lines Industrial Evaporation Industries Pharma & ...

Nov. 26, 2019

By BÜCHI Labortechnik AG

Canarina CUSTIC software · noise calculation · algorithms 3

In a road case, we shall consider several points. We shall consider a minimum number of 1000 vehicles per hour N with a 50km/h minimum velocity (100km/h is the maximum velocity). Then we have a 68 dB(A) noise level at 10m from a lineal road (infinity length). The noise level will be, Leq=68dB(A)+30Log(v/50)+10Log(N/1000)-10Log(r/10) in the lineal (infinite) road case. In the curved ...

Nov. 20, 2011

By Canarina Environmental Software

Obama’s Second Term: What Does It Mean for US EPA and the Regulated Community?

President Obama won a decisive victory on November 6, 2012, and the forecast for the next four years is clearer now than it was pre-election. This Washington Watch column offers some preliminary observations on what lies ahead for domestic environmental management issues at the legislative and regulatory ...

May 1, 2013

By Bergeson & Campbell, P.C.

Heavy metals in urban soils of Xuzhou (China), Part I: total concentration of heavy metals in soils

Concentrations of Hg, As, Cd, Se, Sb, Zn, Cu, Ni, Pb, Ag, Sn, Cr, Sc, Ba, Li, Bi and V were measured in 21 topsoil samples collected from the city of Xuzhou (China). Lead, Zn, Cd, As, Hg, Sb, Cu, Sn, Ag, Se and Bi have been found to be enriched in the topsoils with respect to the background values of Xuzhou, while Sc, Ba, Li, V, Ni and Cr are nearly in the normal concentration range. These ...

Jul. 14, 2008

By Inderscience Publishers

Site 426: Fieldwork Goes On to Ensure Safety Near New Dorms

Environmental Management is investigating the former location of a World War II-era chemical warfare material (CWM) storage yard. The location designated Installation Restoration Program (IRP) Site 426, lies east of the new dormitories between Rousamond Boulevard and Popson Avenue, west of South Muroc ...

Mar. 1, 2000

By J.C. Palomar, Inc.

What is Ultrafiltration Treatment, and How does this Process Work?

What is it? Ultrafiltration treatment is a form of membrane filtration similar to reverse osmosis, separating solid particles from the liquid influent source. This process lies between microfiltration and nanofiltration in terms of particle capture size removal. It has applications as a prefilter for other treatment processes or as a tertiary polishing filter in drinking water and wastewater ...

Sep. 14, 2019

By Genesis Water Technologies, Inc.

Shanghai Academy of Public Measurement, China - Case Study

“The Syncore in combination with the SPE module makes day-to-day work in the laboratory easy and efficient. It help us a lot in our daily routines.“ Customer name Jia li-Juan, Shanghai Academy of Public Measurement Company / Institution Shanghai Academy of Public Measurement, China Product lines Parallel ...

Nov. 26, 2019

By BÜCHI Labortechnik AG

Influent concentrations and removal performances of metals through municipal wastewater treatment processes

This extensive study aimed at quantifying the concentrations and removal efficiency of 23 metals and metalloids in domestic wastewater passing through full-scale plants. Nine facilities were equipped with secondary biological treatment and three facilities were equipped with a tertiary treatment stage. The metals investigated were Li, B, Al, Ti, V, Cr, Fe, Ni, Co, Cu, Zn, As, Se, Rb, Mo, Ag, Cd, ...

Jan. 1, 2011

By IWA Publishing

Oxocarbon Salts for Fast Rechargeable Batteries

Oxocarbon salts (M2(CO)n) prepared through one-pot proton exchange reactions with different metal ions (M=Li, Na, K) and frameworks (n=4, 5, 6) have been rationally designed and used as electrodes in rechargeable Li, Na, and K-ion batteries. The results show that M2(CO)5/M2(CO)6 salts can insert two or four metal ions reversibly, while M2(CO)4 shows less electrochemical activity. Especially, we ...

Sep. 8, 2016

By SusChem

Microbial contamination and environmental factors of drinking water source for households with children under five years old in two South China ethnic groups

The article aimed to find the causes of microbial contamination of drinking water source, by exploring the influencing factors of water on the incidence of diarrhea in children. Random stratified-cluster sampling was used to study Li and Han communities of rural Lingshui County with regard to water quality and environmental sanitation. Water samples were evaluated for microbial contamination ...

May 4, 2016

By IWA Publishing

The Trouble with Asbestos Disposal

Hailed as a miracle mineral because of its superior fire resistance and tensile strength, asbestos was installed abundantly into our built environment for over 200 years. However, once it was established that this undeniably useful resource was a dangerous carcinogen, Australia and many other countries enacted strict regulations for handling asbestos and asbestos containing material (ACM). There ...

Jan. 28, 2014

By Abcov Companies , LLC

Nanomaterials based on carbon and Ti(IV) oxides: some aspects of their electrochemistry

Some aspects of electrochemical synthesis, characterisation and applications of nanostructured carbons and Ti(IV) oxides are discussed. These themes have attracted considerable attention from addressing purely academic questions up to promising applications in energy storage and conversion.Keywords: carbon nanostructures, titanium oxide, electrochemistry, spectroelectrochemistry, solar cells, ...

May 7, 2012

By Inderscience Publishers