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Ga_(2)O_(3)/γ-Al_(2)O_(3)表面丙烷选择性还原NO的反应机理研究

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石油化工 2004年第Z1期33卷 768-770页

作者：何川华 Martin paulus Julius A Nickl Josef Find 储伟 Department of Chemistry TU MünchenLichtenbergstr.4D-85747 GarchingGermany Gesellschaft für Werkstoffprüfung mbH Georg-Wimmer-Ring 25D-85604 ZornedingGermany 四川大学化学工程学院

对不同催化剂的制备方法及催化剂中镓含量对催化剂活性的影响进行了研究,对Ga2O3/γ-Al2O3催化剂中的活性中心进行了讨论;用原位红外技术、暂态反应技术、程序升温脱附和程序升温表面反应等方法对Ga2O3/γ-Al2O3表面丙烷选择性还原NO的... 详细信息

对不同催化剂的制备方法及催化剂中镓含量对催化剂活性的影响进行了研究,对Ga2O3/γ-Al2O3催化剂中的活性中心进行了讨论;用原位红外技术、暂态反应技术、程序升温脱附和程序升温表面反应等方法对Ga2O3/γ-Al2O3表面丙烷选择性还原NO的反应机理进行了研究.对催化剂表面各吸附物种的形成和反应性能、NO对丙烷氧化的影响进行了详细的研究,实验结果与化学计量学计算结果相结合可以推测出哪些吸附物种涉及NO的选择性还原,哪些吸附物种没有参与NO的还原反应,从而推断出在Ga2O3/γ-Al2O3催化剂表面丙烷选择性还原NO的反应机理.

关键词：选择催化还原(SCR) NOx消除反应氧化铝氧化镓原位红外光谱研究反应机理

Application of virtual reality for dementia management

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Brain Science Advances 2022年第3期8卷 210-220页

作者： Yuan-Han Yang Rocksy FV Situmeang paulus Anam Ong Rajka M Liscic Department of Neurology Kaohsiung Medical University HospitalKaohsiung Medical UniversityKaohsiungTaiwanChina Department of Neurology Kaohsiung Municipal Ta-Tung HospitalKaohsiung Medical University HospitalKaohsiungTaiwanChina Neuroscience Research Center Kaohsiung Medical UniversityKaohsiungTaiwanChina Siloam Hospitals Lippo Village Pelita Harapan UniversityBantenIndonesia Department of Neurology Hasan Sadikin HospitalBandungIndonesia Neuro-Spinal Hospital Dubai Science ParkDubaiUAE

Age is recognized as the major factors of dementia,especially in for Alzheimer’s disease(AD).Given to the aged population,the increased number of demented population has been receiving a great impact in our ***,so far,no cured medicines have been demonstrated to provide effective treatment in *** combination of pharmacological and non-pharmacological interventions has been proposed to manage dementia with potential benefits especially in decreasing caregiver’s burden and behavior,as well as psychological problems of demented ***,giving to the glorious development in digital technologies,the virtual reality,one of the non-pharmacological interventions has been used extensively in dementia managements for its strengths which can be adapted in accordance with the heterogeneous needs from demented patients and their ***,various study designs and other reasons made these results difficult to be *** this review our goal is to provide a better understanding for these points.

关键词： dementia virtual reality Alzheimer's disease cognition behavior and psychological problem

A Study on Pollen Viability of Piper colubrinum Link

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Journal of Agricultural Science and Technology(B) 2012年第11期2卷 1177-1183页

作者： Chen Yi Shang Cheksum Supiah Tawan paulus Amin Det Sim Soon Liang Malaysian Pepper Board Jalan Utama Pending Industrial Area P.O. Box 1653 Kuehing Sarawak 93916 Malaysia Department of Plant Science and Environmental Ecology Faculty of Resource Science and Technology Universiti MalaysiaSarawak JalanDatukMohd Musa Kota Samarahan Sarawak 94300 Malaysia Agricultural Research Centre P.O. Box 977 Kuching Sarawak 93720 Malaysia

Pollen viability study on Piper colubrinum Link. carried out to develop interspecific hybridization between P. nigrum L. and P. colubrinum Link.. This plant has good potential as a donor plant in breeding programme for Phytophthora to foot rot resistance in the cultivated species, P. nigrum. This project was carried out to reveal the optimum time to collect pollen of P. colubrinum for artificial pollination. Through this study, anther dehiscence was proved occurred around 9 am. Based on the result obtained from study on the time of anther dehiscence, the pollen was classified into five stages for testing on the viability, i.e., stage 1, before anther dehiscence, i.e., around 7 am （pollen obtained by crushing on the anther）; stage 2： immediately after anther dehiscence, i.e., around 9 am; stage 3： two hours after anther dehiscence, i.e., around 11 am; stage 4： four hours after anther dehiscence, i.e., around 1 pm; and stage 5： six hours after anther dehiscence, i.e., around 3 pm. Data obtained from pollen germination and pollen tube growth study showed that pollen of P. colubrinum was the most viable at two hours after anther dehiscence and onward. It was also proved that the viability can be maintained up to at least eight hours. Pollen obtained before anther dehiscence by crushing on the anther was found less viable with lower percentage of pollen germination and retarded pollen tube growth. In other words, the experiment enlightened that artificial pollination between P. nigrum L. and P. colubrinum Link was ideally to be carded out approximately starting from 11 am until 5 pm, considering the viability of pollen ofP. colubrinum.

关键词： P. nigrum L. P. colubrinum Link. pollen viability artificial pollination interspecific hybridization.

Activating coordinative conjugated polymer via interfacial electron transfer for efficient CO_(2) electroreduction

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能源化学:英文版 2023年第8期83卷 313-323,I0009页

作者： Jing Zhang Jia-Jun Dai De-Quan Cao Heng Xu Xing-Yu Ding Chun-Hua Zhen Beate paulus Jin-Yu Ye Qian Liang Jun-Ke Liu Shi-Jun Xie Sai-Sai Deng Zhen Wang Jun-Tao Li Yao Zhou Shi-Gang Sun College of Energy XiamenUniversityXiamen 361005FujianChina College of Chemistry and Chemical Engineering Xiamen UniversityXiamen 361005FujianChina Institute of Chemistry and Biochemistry Freie Universitat BerlinArnimallee 2214195 BerlinGermany

With tunable local electronic environment,high mass density of MN4sites,and ease of preparation,metal-organic conjugated coordinative polymer(CCP) with inherent electronic conductivity provides a promising alternative to the well-known M-N-C ***,the coordination reaction between Cu^(2+)and 1,2,4,5-tetraaminobenzene(TAB) was conducted on the surface of metallic Cu nanowires,forming a thin layer of CuN4-based CCP(Cu-TAB) on the Cu *** importantly,interfacial transfer of electrons from Cu core to the CuN4-based CCP nanoshell was observed within the resulting CuTAB@Cu,which was found to enrich the local electronic density of the *** such,the CuTAB@Cu demonstrates much improved affinity to the*COOH intermediate formed from the rate determining step;the energy barrier for C-C coupling,which is critical to convert CO_(2)into C2products,is also ***,it delivers a current density of-9.1 mA cm^(-2)at a potential as high as 0.558 V(***) in H-type cell and a Faraday efficiency of 46.4% for *** work emphasizes the profound role of interfacial interaction in tuning the local electronic structure and activating the CuN4-based CCPs for efficient electroreduction of CO_(2).

关键词： Metal-organic solid compounds Conjugated coordinative polymer Solid-solid interfacial electron transfer MN_(4)sites Electrocatalysis

Upper mediastinal and paratracheal node dissection in total (pharyngo) laryngectomy, it is really indicated?

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Open Journal of Stomatology 2011年第4期1卷 185-188页

作者： Didier Dequanter M. Shahla P. paulus P. Lothaire 不详

Introduction: Advanced laryngeal and hypopharyn- geal cancers are aggressive tumors with a poor prog- nosis. Multiple lymph node metastases often occur in the neck as well as in the upper mediastinum and thus upper mediastinal dissection is crucial to im- proving the cure rate. However, excessive mediastinal dissection can increase postoperative morbidity and mortality making it important to employ the proper technique and appropriate extent of dissection. In the present study, we aimed to determine the need and the prognostic importance of mediastinal dissection in patients with advanced carcinoma of the upper aerodigestive tract. Methods: A retrospective review of the records of 30 patients who underwent (phar- ynxgo) laryngectomy for advanced squamous cell carcinomas was done. 17 patients had laryngeal car- cinomas, 13 had hypopharyngeal carcinomas. The mediastinal dissection was designed to remove mainly the paratracheal and retrooesophageal lymph nodes. Results: 60 neck dissections and 30 mediastinal dis- section were performed in 30 patients and yielded positive nodes were found in 20/30 patients. Neck nodes were positive in 9/17 of the patients with la-ryngeal cancer and 11/13 of the patients with hypo- pharyngeal cancers respectively. Positive nodes were detected in the neck regardless of T stage. The medi- astinal nodes were positive in 0% of the patients with laryngeal cancer. Upper mediastinal metastases were detected positive in 6/13 of the hypopharyngeal pa-tients. In these patients, mediastinal metastases were associated with tumors greater than 35 mm. The ma- jority of positive paratracheal nodes were less than 1 cm in diameter and appeared negative preoperatively. 0% of the patients had positive paratracheal nodes alone in a histologically negative cervical neck dissec-tion Regarding the appropriate extent of dissection, no major complications were observed. Conclusions: There is little controversy about neck dissection in advanced tumors of the (pha

关键词： Advanced Head and Neck Cancer Mediastinal Dissection Hypopharynx

Oxygen radical formation does not have an impact in the treatment of severe acute experimental pancreatitis using free cellular hemoglobin

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World Journal of Gastroenterology 2006年第18期12卷 2914-2918页

作者： Helge Kleinhans Oliver Mann paulus G Schurr Jussuf T Kaifi Bente Hansen Jakob R Izbicki Tim Strate Department of General- Visceral- and Thoracic SurgeryUniversity Medical Center Hamburg-EppendorfMartinistrasse 52D-20246 HamburgGermany

AIM： Microcirculatory dysfunction and free oxygen radicals are important factors in the pathogenesis of severe acute pancreatitis. Additional oxygen delivery might enhance lipid peroxidation but may also improve pancreatic microcirculation. This study assesses the effect of free cellular bovine hemoglobin on the formation of oxygen radicals and microcirculation in a rodent model of severe acute pancreatitis. METHODS： Fifteen minutes after induction of acute pancreatitis Wistar rats received either 0.8 mL bovine hemoglobin （HBOC-200）, hydroxyethyl starch （HES） or 2.4 mL of normal saline to ensure normovolemic substitution. After 6 h of examination the pancreas was excised and rapidly processed for indirect measurement of lipid peroxidation products malondialdehyde （MDA） and reduced glutathione （GSH） in pancreatic tissue. RESULTS： The single application of HBOC-200 improved pancreatic microcirculation and reduced histopathological tissue damage significantly. Tissue concentration of MDA did not differ between the groups. Also no differences in GSH levels were detected.CONCLUSION： Though the single application of HBOC-200 and HES improve pancreatic microcirculation, no differences in lipid peroxidation products were detected. The beneficial effect of additional oxygen supply （HBOC-200） does not lead to enhanced lipid peroxidation.

关键词： Hemoglobin-based-oxygen-carrier HBOC Blood substitudes Severe acute pancreatitis Free oxygen radicals Oxidative stress