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| 1 | Source identification, contamination status and health risk assessment of heavy metals from road dusts in Dhaka, Bangladesh显示文摘In this study, concentrations of Cr, Mn, Ni, Cu, Zn, Cd and Pb were determined in road dusts collected from different locations in Dhaka to assess source, contamination status and health risk. Energy-dispersive X-ray fluorescence spectroscopy and energy-dispersive X-ray spectroscopy were used to determine Cr, Mn, Ni, Cu, Zn, Cd and Pb and their mean concentrations were 162.27 ± 29.46, 721.18 ± 180.14, 35.65 ± 12.55, 104.56 ± 128.33, 515.32 ± 321.90,BDL, and 342.82 ± 591.20 mg/kg, respectively. Among the heavy metals, highest concentrations of Cu, Zn and Pb were found at urban sites-7(municipal waste dumping) and 8(medical waste incineration). Highest concentration of Cr followed by Cu and Zn was found at site-5(Tejgaon, urban). Principal component analysis revealed that anthropogenic activities are the potential sources for Cr, Ni, Cu, Zn and Pb while earth crust for Mn. Pollution index and pollution load index results suggested that all the sites were contaminated and/or degraded by Cr, Cu, Zn and Pb except sites-9(urban), 10(sub-urban), 11(rural) while sites-7 and 8(urban) were extremely degraded. For noncarcinogenic health risk, hazard quotient values for dermal were higher compared to that of inhalation/ingestion. Though hazard index values were less than 1 at all the sites, these were at least one order of magnitude higher for children group than that of adult group, thus the children group may face more noncarcinogenic health risk at sites -7 and 8. Values of incremental lifetime cancer risk were from 10to 10showed no carcinogenic health risk by road dusts contaminated with the heavy metals. | Aklima Nargis Ahsan Habib Md Nazrul Islam Kai Chen Md Shafiqul Islam Sarker A N M Al-Razee Wenbin Liu Guorui Liu Minggang Cai | 2022 | Journal of Environmental Sciences2022，34，11： | 3 |
| 2 | Indication for peritoneal biopsy in tuberculous peritonitis 显示文摘 | Kai Ming Chowa Viola Chi-Ying Chowb Cheuk Chun Szeto MD | 2003 | The American Journal of Surgery2003，185，6： | 1 |
| 3 | Surgical strategy for the management of sacral giant cell tumors:a 32-case series显示文摘 | Guodong Li MD Dong Fu MD Kai Chen MD | 2012 | Spine2012，12，： | 1 |
| 4 | Transforming growth factor beta inhibition increases mortality and left ventricular dilatation after myocardial infarction显示文摘 | Stefan Frantz MD Kai Hu Anna Adamek Jürgen Wolf Abed Sallam Sebastian KG Maier Scott Lonning Hong Ling Georg Ertl Johann Bauersachs | 2008 | Basic Research in Cardiology2008，，5： | 1 |
| 5 | Status of multielement in water of the river Buriganga, Bangladesh: Aquatic chemistry of metal ions in polluted river water显示文摘The peripheral rivers of Dhaka city became highly polluted because of industrialization and urbanization to a greater extent in the last few decades.Thus,an attempt has been taken to measure 48 elements in water of the river Buriganga using the ICP-MS method for the first time.Accordingly,it could be the reference values for future research in Bangladesh.Out of the 48 elements,the following metals are given more attention because of their detrimental effects on living organisms and for discussing their aquatic chemistry in polluted water body:Be,Na,Al,Cr,Mn,Fe,Ni,Cu,Zn,Cd,Ba,Hg,Pb,Bi and U.Results revealed that metals’concentrations in water in the monsoon were less than that of the winter,however,Cr and Fe were found at below detection limits in the winter that is unexpected.Physicochemical parameters of the river water such as pH,dissolved oxygen play vital roles for hydrolysis reactions in the stagnant water body.Hydrolyzed products of metal ions having low values of solubility products(K sp),for example,iron(III)hydroxide,chromium(III)hydroxide,phase out through precipitation reactions.This study also detects and quantifies total concentrations of Hg and U in water of the river Buriganga for the first time.PCA and correlation matrix results provided potential sources of the relevant metals.Mechanisms of hydrolysis and precipitation reactions for metal ions in the polluted river water are also discussed. | Aklima Nargis Ahsan Habib Harun-Or-Rashid Halima Binte Harun Md Shafiqul Islam Sarker Rong Jin Guorui Liu Wenbin Liu A.N.M.Al-Razee Kai Chen Minggang Cai | 2021 | Emerging Contaminants2021，7，1： | 1 |
| 6 | Indication for peritoneal biopsy in tuberculous peritonitis显示文摘 | Kai Ming Chowa Viola Chi-Ying Chowb Cheuk Chun Szeto MD | 2003 | The American Journal of Surgery2003，185，6： | 1 |
| 7 | Time course of cardiac structural function and electrical changes in asymptomatic patients after myocardial infarction :Their inter-relation and prognostic impact显示文摘 | PeterGaudron MD Ingler MD Kai Hu MD | 2001 | Journal of the Am Coil of Cardiology2001，38，： | 1 |
| 8 | Natural high-porous diatomaceous-earth based self-floating aerogel for efficient solar steam power generation显示文摘The application of solar steam generation in seawater desalination is an effective way to solve the shortage of fresh water resources.At present,many kinds of photothermal conversion materials have been developed and used as evaporators in seawater desalination.However,some evaporators need additional thermal insulation or water supply devices to achieve efficient photothermal conversion.In addition,their complex,time consuming and no scalable preparation process,high cost of raw materials and poor salt resistance hinder the practical application of these evaporator.Owing to its distinctive nanoporous structure,diatomite as fossilized single-cells algae diatoms is a promising natural silica-based material for seawater desalination.They are taken from sea and that makes true sense to use them in the sea.Herein,we report the first example of synthesis robust three-dimensional(3D)natural-diatomite composite by assembling polyaniline nanoparticles covered diatomite into the polyvinyl alcohol pre-treated melamine foam frameworks and demonstrate its application as new evaporator for seawater desalination.The porous framework does not only improve the sunlight scattering efficiency,but also offer large network of channels for water transportation.The inherent mechanism behind salt desalination process involves the absorption of water molecules on the surface of the internal silica micro-nano pores,and evaporation under the heat induced by the polyaniline absorbed sunlight.Meanwhile,the metal ions are segregated by many available pores and channels to achieve the self-desalting effect.The developed evaporator possesses the superiority of multi-stage pore structure,strong hydrophilicity,low thermal conductivity,excellent light absorption,fast water transportation and salt-resistant crystallization as well as good durability.The evaporation rate without an additional device is found to be 1.689 kg m^(-2)h^(-1)under 1-Sun irradiation,and the energy conversion efficiency is as high as 95%.This work creates a platform and develops the prospect of employing green and sustainable natural-diatomite composite evaporator for practical applications of seawater desalination. | Aitang Zhang Kai Wang Md Julker Nine Mengyu Cao Hanwen Zong Zhiqiang Liu Hanwen Guo Jingquan Liu Dusan Losic | 2024 | Green Energy & Environment2024，9，2： | 0 |
| 9 | 血小板减少时纤维蛋白原水平对血栓弹力测定参数的影响显示文摘背景纤维蛋白原及纤维蛋白与血小板的结合,在正常的止血过程中发挥着重要作用。血小板一纤维蛋白相互作用的程度可通过旋转式血栓弹力测定法(ROTEM)测量血凝块粘弹性的强度进行评估。在本试验中,我们研究了纤维蛋白原浓度对ROTEM测得整体血凝强度的影响及其发挥的作用。方法采集健康志愿者的血样作为研究样品。通过ROTEM检测一系列用同源血浆调配为含不同血小板数量的富含血小板血浆(PRP)的最大凝固程度(MCE),以此评估血小板数量对血凝强度的影响。经调配后PRPs的血小板数量分别为10×10^3mm^-3、50×10^3mm^-3和100×10^3mm^-3,并各加入浓度为550和780mg/dl的纤维蛋白原浓缩液。纤维蛋白的聚合作用可不依赖于血小板的附着对血凝强度产生影响,细胞松弛素D-修正的血栓弹力测定法(FIBTEM)可对以上影响进行分析。此外,本研究还回顾性分析了两组血小板减少患者的血凝强度(MCE)。结果血小板低于100×10^3mm^-3时血凝强度(MCE)有所降低,而当血小板数量为400×10^3mm^-3时MCE上升达峰值并延伸为一平台。PRP中渐增的纤维蛋白原浓度以浓度依赖的方式逐渐增加血凝强度,即使在血小板数量较低时(10×10^3mm^-3)仍有同样表现。904例血小板减少患者的资料分析也证实血凝强度和血浆纤维蛋白原水平之间存在正相关。结论这些体外研究和临床资料的ROTEM分析结果提示,血凝强度以纤维蛋白原浓度依赖的方式增加,而且不依赖血小板的数量。血小板减少时维持纤维蛋白原的浓度至关重要。外源性激活(EXTEM)和FIBTEM对于指导纤维蛋白原的补充治疗具有一定应用价值。 | Thomas Lang MD Kai Johanning, MD Helfried Metzler, MD Siegfried Piepenbrock, MD Cristina Solomon, MD NielsRahe-Meyer, MD, PhD Kenichi A. Tanaka, MD, MSc 杨静(译) | 2011 | 麻醉与镇痛2011，7，3： | 0 |
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