536 research outputs found
sj-doc-1-tau-10.1177_17562872221128473 – Supplemental material for Furosemide improves the stone clearance rate of extracorporeal shockwave lithotripsy for kidney stones but not ureteral stones: a systematic review and meta-analysis
No full textSupplemental material, sj-doc-1-tau-10.1177_17562872221128473 for Furosemide improves the stone clearance rate of extracorporeal shockwave lithotripsy for kidney stones but not ureteral stones: a systematic review and meta-analysis by Feng Yao, Ke Li, ShiQuan Huang, XueSong Cheng and XiaoLiang Jiang in Therapeutic Advances in Urology</p
Ultra-short pulsed laser surface processing and decontamination:
No full textIn this thesis surface decontamination via USP (ultra-short pulse) laser ablation is experimentally investigated. A Raydiance laser(0.9 or 1.2 ps, 1552nm, 1-5μJ, 1-500kHz) is employed. By focusing the high peak intensity, ultra-short pulse laser beam into a small spot and scanned over the contaminated area, material removal via plasma-mediated ablation is implemented with micro-joule level pulses. Laser ablation features of different materials such as glass, PDMS polymer and blood contamination are studied. By targeting a thin film or distributed surface contaminants with the USP laser decontamination results at varies laser parameters are examined. By carefully aligning the laser focus removal at cellular level is demonstrated. Utilizing the advantages of USP laser, we successfully achieved optimum surface decontamination results on soft biological phantom and skin dermis tissue. The experiment results are evaluated by a digital microscope or SEM. The Ultra-short pulse laser ablation technique offers a promising alternative to the current surface processing and decontamination method in bio-medical applications.M.S.Includes bibliographical references (p. 63-67)by Xiaoliang Wan
Kahler submanifolds and the Umehara algebra
No full textWe show that indefinite Euclidean spaces and indefinite non-flat complex space forms are relatives. We also study when two Fubini-Study spaces are relatives
Coherent Raman Scattering Microscopy
No full textResearch and development of modern optical microscopes are guided by several aspects, from resolution obsession to imaging of living specimens, from a low-level of perturbation to long-term experiments on biological systems. One of the most outstanding goals is the possibility of performing at the highest current levels, including 4-D (x,y,z,t) nanoscopy/superresolution, label-free imaging. Coherent Raman scattering (CRS) microscopy represents a key label-free imaging method for studying living cells and tissues at a high time rate. Ji-Xin Cheng and Xiaoliang Sunney Xie, two of the most representative scientists in this area, assembled the perfect book for disseminating the method. Their experience as scientists and authors and their robustness and consideration in the field allowed them to edit a great book that, starting from the foundation of CRS microscopy, covers the field in a comprehensive and exhaustive way
Enterprise, family and society: Economic development and sociocultural changes in the Pearl River Delta area of China
No full textRural economic and social development has been an important issue for many developing countries. China has experienced a unique rural development strategy since 1979. The emergence and rapid growth of rural non-agricultural enterprises in China have drawn the attention of many economists. This study aims at providing a comprehensive evaluation of the validity and the consequences of such a development strategy. The research combines historical review and anthropological depth to examine the economic and social consequences of the development of rural enterprises in a township in south China.The issues concerned in this study were: (1) had the strategy in developing rural non-agricultural enterprises met its goal in increasing household income and improving the peasants' living standards? (2) how did the transformation of economic patterns affect the family structure and the village organization during this period? (3) what were some of the socio-cultural consequences of the large-scale development of rural non-agricultural enterprises?Four administrative villages in a township were chosen to conduct participant observation and intensive interviews. Qualitative and quantitative data were gathered over a period of six months in 1989, to investigate the manner of economic transformation and the degree of social adaptation. Synchronic and diachronic analyses were combined to determine the context of socio-economic changes and the trend that will probably continue to next few decades. The field research and analysis, which combined micro analysis and macro interpretation, led into one of the most important aspects in the study of socio-economic development. Social transformation is understandable only by conjoining micro and macro analyses.The study revealed that the rural development strategy has achieved considerable success in providing vast employment opportunities and improving the rural population's living standards. Consequently, the average size of households in this township, as well as in China, has decreased due to the increased division of the family, which was encouraged by the rapid increase of living space resulting from the rise of household income. The birth control policy practiced in China also has a significant effect on the household size. The study shows that economic considerations and social ties were important factors in marriage choices. The socio-economic development in this area also resulted in the changes in recreational patterns and people's social values. The emergence of a large number of migrants has disturbed the social order. In addition, the development strategy has had an environmental impact and led to a decrease in farmland. These should be regarded as some of the adverse side-effects of the Chinese rural development strategy.Source: Dissertation Abstracts International, Volume: 52-09, Section: A, page: 3328.Advisors: Ruth Landman.Ph.D. American University 1991.Englis
RETRACTED ARTICLE: Preparation of carrierized cellulase Cellulase@MIL-88B(Fe) and its enzymatic properties
No full textWe, the Editors and Publisher of Green Chemistry Letters and Reviews have retracted the following article:Erhong Zhang, Meng Wang, Xiaoliang Pan, Xinfeng Wang & Wenju Zhang (2022) Preparation of carrierized cellulase Cellulase@MIL-88B(Fe) and its enzymatic properties, Green Chemistry Letters and Reviews, 15:3, 627-637, DOI: https://doi.org/10.1080/17518253.2022.2124890Following publication, the authors requested the withdrawal of this article in 2022 due to a conflict with an associated patent. Further investigations by the Publisher, in close collaboration with the Editor-in-Chief, could not confirm a conflict with an associated patent but revealed that the article has significant overlap with a chapter of an unpublished thesis titled “Construction of an adaptive immobilized cellulase system and its enzymatic hydrolysis performance” authored by Tiantian Li in June 2022. More specifically, the overlap involves most of the data in the article which was reused without the required permissions, or the knowledge of the owners of the data.Upon query, the authors have cooperated with the investigation, but could neither demonstrate that their data was obtained appropriately, nor that their study was conducted in compliance with our editorial policies. As the reuse of data from a third-party without acquiring the required permissions is a serious breach of publishing ethics, we are retracting the article from the journal. The corresponding author listed in this publication has been informed.We have been informed in our decision-making by our editorial policies and the COPE guidelines.The retracted article will remain online to maintain the scholarly record, but it will be digitally watermarked on each page as ‘Retracted’
Highly Conductive 3D Segregated Graphene Architecture in Polypropylene Composite with Efficient EMI Shielding
No full textThe extensive use of electronic equipment in modern life causes potential electromagnetic pollution harmful to human health. Therefore, it is of great significance to enhance the electrical conductivity of polymers, which are widely used in electronic components, to screen out electromagnetic waves. The fabrication of graphene/polymer composites has attracted much attention in recent years due to the excellent electrical properties of graphene. However, the uniform distribution of graphene nanoplatelets (GNPs) in a non-polar polymer matrix like polypropylene (PP) still remains a challenge, resulting in the limited improvement of electrical conductivity of PP-based composites achieved to date. Here, we propose a single-step approach to prepare GNPs/PP composites embedded with a segregated architecture of GNPs by coating PP particles with GNPs, followed by hot-pressing. As a result, the electrical conductivity of 10 wt % GNPs-loaded composites reaches 10.86 S.cm(-1), which is approximate to 7 times higher than that of the composites made by the melt-blending process. Accordingly, a high electromagnetic interference shielding effectiveness (EMI SE) of 19.3 dB can be achieved. Our method is green, low-cost, and scalable to develop 3D GNPs architecture in a polymer matrix, providing a versatile composite material suitable for use in electronics, aerospace, and automotive industries
Water analysis for emerging environmental contaminants
No full textThe presence of emerging environmental contaminants in water bodies used either as drinking water or for recreational purpose has received considerable attention in the recent years. The emerging environmental contaminants can be defined as a wide range of chemicals that have been determined in the environment which may present serious health risks for humans. The occurrence of these contaminants indicate that both household and industrial chemicals have been introduced to water resources, a wide variety of chemicals, such as disinfection byproducts, pharmaceutical and personal care products and so on, have been detected at cetiain levels in either water bodies or treatment plants in worldwide. Although developments in new regulations and detection methods have taken place in the past decades that impact water analysis, there is currently no validated EPA or consensus organization methods for many of the listed emerging environmental contaminants. This body of work developed LC/MS/MS or ICP-MS based techniques for water analysis of several classes of emerging environmental contaminants, including herbicides degradation byproducts; cyanotoxins; N-nitrosamines and heavy metal leaching from plastic bottles. In addition, the developed methods were used to conduct high throughput screening of these emerging contaminants in water samples of various types, and to investigate the removal efficiency of these contaminants by using various oxidants and physical treatment with emphasis on analysis and treatment --Abstract, page iv
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