|
|
|
题名
|
作者
|
年代
|
出处
|
被引量
|
| 1 | Monitoring dioxins and PCBs in eggs as sensitive indicators for environmental pollution and global contaminated sites and recommendations for reducing and controlling releases and exposure显示文摘This review compiles information on PCDD/F-and PCB-contaminated eggs from 20 years of global egg monitoring around emission sources in four continents conducted by the International Pollutants Elimination Network(IPEN)and Arnika as well as a compilation of data from scientific literature.IPEN monitored 127 pooled egg samples including samples from 113 chicken flocks at potential PCDD/F-and PCB-contaminated sites around priority sources listed in the Stockholm Convention(e.g.waste incinerators,metal industries,cement plants,and open burning).99(88%)of pooled egg samples were above the EU maximum limits for PCDD/Fs(2.5 pg PCDD/F-TEQ/g fat)or the sum of PCDD/Fs and dioxinlike PCBs(5 pg PCDD/F-PCB-TEQ/g fat).Children consuming such eggs exceed the tolerable weekly intake(TWI).This demonstrates that close to 90%of these areas were not safe for the production of free-range eggs.Sixteen out of the 113 egg samples(14%)were contaminated above 50 pg TEQ/g fat and exceeded the EU maximum limit more than 10 times.From the 26 pooled egg samples around incinerators 24(92%)exceeded the limit with a mean of 43.1 pg TEQ/g fat(2.6e234 pg TEQ/g).All 21 egg samples around metal industries(4.4e112.6 pg TEQ/g fat)were above limits with mean concentration of 26.0 pg TEQ/g fat.Also all 7 egg samples measured at e-waste recycling sites were above limits(mean 308 pg TEQ/g fat).In 58(51%)pooled egg samples the PCB-TEQ was above 5 pg TEQ/g fat exceeding the EU maximum limit with dioxin-like PCBs alone.This highlights the role of commercial PCBs for global contamination with dioxin-like compounds.It was discovered that around metal industries,shredder plants,open burning sites of e-waste and dump sites,a high share of contamination was caused by dl-PCBs.This clearly shows severe PCB release from the end-of-life management of PCB-containing equipment in developing countries.Also highly contaminated eggs were found at many sites where plastic was incinerated.The highest contaminated egg sample ever measured came from an e-waste site in Ghana and had 856 pg TEQ/g fat plus 300 pg TEQ from brominated dioxins(PBDD/Fs).Other extreme PCDD/F contaminations of eggs were found at a chlor-alkali site(514 pg TEQ/g fat),Agent Orange contaminated areas in Vietnam(490,249 and 246 pg TEQ/g fat)and e-waste sites(568 and 520 pg TEQ/g fat).Where DR CALUX®bioassay revealed higher TEQ compared to measured PCDD/F-PCB-TEQ in IPEN studies,polybrominated PBDD/F were also measured and detected up to 300 pg TEQ/g fat at e-waste sites.One positive outcome from the IPEN studies is that all 10 pooled supermarket eggs in developing countries were below regulatory limit.Policy recommendations are made including:a systematic assessment of areas around PCDD/Fs and PCBs sources;measures for reduction of exposures of populations;urgent control of emission sources including PCB equipment,the open burning of plastic,and the use of plastic as fuel in boilers/incinerators in developing countries without air pollution control.Furthermore,soil limits need to be re-assessed and lowered for free-range poultry. | Jindrich Petrlik Lee Bell Joe DiGangi Serge Molly Allo'o Allo'o Gilbert Kuepouo Griffins Ochieng Ochola Valeriya Grechko Nikola Jelinek Jitka Strakova Martin Skalsky Yuyun Ismawati Drwiega Jonathan N.Hogarh Eric Akortia Sam Adu-Kumi Akarapon Teebthaisong Maria Carcamo Bjorn Beeler Peter Behnisch Claudia Baitinger Christine Herold Roland Weber | 2022 | Emerging Contaminants2022，8，1： | 2 |
| 2 | Carbon monoxide and total ozone in Arctic and Antarctic regions:seasonal variations,long-term trends and relationships显示文摘 | Yurganov L.N Dzhola A.V Grechko E.I | | 0，，： | 1 |
| 3 | High-altitude capsule aerodynamics with real gas effects显示文摘 | Ivanov M S Markelov G N Gimelshein S F Mishina L V Krylov A N Grechko N V | 1998 | Journal of Spacecraft and Rockets1998，35，1： | 1 |
| 4 | Controlling the electro-optic response of a semiconducting perovskite coupled to a phonon-resonant cavity显示文摘Optical cavities,resonant with vibrational or electronic transitions of material within the cavity,enable control of light-matter interaction.Previous studies have reported cavity-induced modifications of chemical reactivity,fluorescence,phase behavior,and charge transport.Here,we explore the effect of resonant cavity-phonon coupling on the transient photoconductivity in a hybrid organic-inorganic perovskite.To this end,we measure the ultrafast photoconductivity response of perovskite in a tunable Fabry–Pérot terahertz cavity,designed to be transparent for optical excitation.The terahertz-cavity field-phonon interaction causes apparent Rabi splitting between the perovskite phonon mode and the cavity mode.We explore whether the cavity-phonon interaction affects the material’s electron-phonon interaction by determining the charge-carrier mobility through photoconductivity.Despite the apparent hybridization of cavity and phonon modes,we show that the perovskite properties in both ground(phonon response)and excited(photoconductive response)states remain unaffected by the tunable light-matter interaction.Yet the response of the integral perovskite-terahertz optical cavity system depends critically on the interaction strength of the cavity with the phonon:the transient terahertz response to optical excitation can be increased up to threefold by tuning the cavity-perovskite interaction strength.These results enable tunable switches and frequency-controlled induced transparency devices. | Lucia Di Virgilio Jaco J.Geuchies Heejae Kim Keno Krewer Hai Wang Maksim Grechko Mischa Bonn | 2023 | Light(Science & Applications)2023，12，9： | 0 |
| 5 | Impact of Connexins on Atherogenesis: A Brief Review显示文摘Connexins family in humans consists of 21 highly conserved proteins that are responsible for contact formation between cells. On the cell surface, connexins form hemichannels, or connexons. Two hemichannels brought together form a gap junction, a form of intercellular contact that allows for direct transfer of material and signals between the adjacent cells. Gap junctions serve for transporting ions and other soluble, low molecular weight molecules therefore synchronizing the microenvironment of the contacting cells and maintaining cell and tissue homeostasis. Impairment of gap junctions is associated with different pathological conditions. Importantly, it has been described in atherosclerosis, which causes local cellular dysfunction in the arterial wall tissues followed by the development of atherosclerotic plaque. There are 3 main connexins expressed in human cardiovascular system: Cx37, Cx40, and Cx43. Alterations in the arterial wall cells observed in atherosclerosis include changes in the expression pattern of the main connexins and impairment of intercellular contacts and communication. According to the currently available data, Cx37 and Cx40 have anti-atherogenic and vasculoprotective properties, while Cx43 appears to be more pro-atherogenic. However, the effects of connexins are cell type-dependent and in many cases, remain to be studied in detail. In this review, we summarize the available knowledge on connexins of the arterial wall cells involved in atherosclerosis development. | Veronika A. Myasoedova Dongwei Zhang Reinhard Wetzker Andrey V. Grechko Alexander N. Orekhov | 2018 | Journal of Integrative Medicine(双语)2018，7，2： | 0 |
您所在的机构暂未开通此部分的功能，请联系管理员