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Journal of Energy Chemistry 1996年第1期 81-86页

作者： gone mao-chu XU Zheng-Hong CHEN Yu HE Yue CHEN Yao-Qiang ZHOU Jian-Lue PAN Gui-Huang (Department of Chemistry and Analytical & Testing Center Sichuan University, Chengdu, Sichuan 610064)

The effects of surface acidity-basicity and surface oxidation reduction property of Li-La-Mn/TiO2 (Ⅰ) and Li-La-Mn-W/TiO2 (Ⅱ) catalysts on oxidative coupling of methane were studied by CO2-temperature programmed desorption (CO2-TPD) and temperature programmed reduction temperature programmed oxidation (TPR-TPO). The results show that there exist strong basic sites on catalysts Ⅰ and Ⅱ, but the quantity of these sites on catalyst Ⅱ is more than that on catalyst Ⅰ. Besides, the strength of basics site on catalyst Ⅱ is stronger than that on catalyst Ⅰ. The surface of catalyst Ⅱ is easier to reduce and re-oxidize than that of catalyst Ⅰ, and the extent of reduction and reoxidation of catalyst Ⅱ is more intensive than catalyst Ⅰ,which results in a lowering of the reaction theperature and enhances the activity and C2 hydrocarbon yield as well as gas hourly space velocity (GHSV) Catalyst Ⅱ is excellent for the oxidative coupling of methane (OCM).

关键词： catalyst oxidative coupling of methane CO2-TPD TPR-TPO

The association between malaria and malnutrition among under-five children in Shashogo District,Southern Ethiopia:a case-control study

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Infectious Diseases of Poverty 2017年第1期6卷 70-77页

作者： Terefe gone Fiseha Lemango Endale Eliso Samuel Yohannes Tadele Yohannes Department of Medical Laboratory Sciences Hosanna College of Health SciencesP.O.BOX 159HosannaEthiopia Department of Public Health Hosanna College of Health SciencesHosannaEthiopia Shashogo District Health Office ShashogoEthiopia

Background:Recent studies have presented conflicting findings about whether malaria is associated with an increased or decreased risk of ***,assessing the relationship between these two disastrous diseases in the most vulnerable groups,such as in children aged below 5 years(under-five children),may lead to the discovery of new low-cost and effective aides to current methods of malnutrition prevention in malariaendemic ***,this study was conducted to assess the relationship between malaria and malnutrition among under five children in an area with a high degree of malaria ***:The study involved comparing malnourished children aged 6-59 months and nourished children of the same age for their past exposure to malaria,in Shashogo District,Southern Ethiopia.A validated structured questionnaire was used to collect home to home socioeconomic data and anthropometric instruments for clinical *** collected data were analysed using descriptive and inferential statistics by means of EpiData entry software and STATA data analysis ***:A total of 356(89 malnourished and 267 nourished)under-five children participated in the *** exposure to Plasmodium infection was found to be a predictor for the manifestation of malnutrition in under-five children(P=0.02[OR=1.87,CI=1.115-3.138]).Children from a household with a monthly income of less than USD 15 were 4.5 more likely to be malnourished as compared to the other children(P=0.001[OR=0.422,CI=0.181-0.978]).Conclusion:This study found that exposure to Plasmodium has a significant impact on the nutritional status of *** addition,socio-demographic factors,such as family income,may play a role in determining whether children are malnourished or not and may lead to increased morbidity due to malnourishment in children living in malaria-endemic ***,malnutrition control interventions should be consolidated with malaria prevention strategies particu

关键词： Malaria Malnutrition Under-five children Ethiopia

Driving characteristics of octagon-type ultrasonic motor

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Journal of Central South University 2013年第1期20卷 71-75页

作者： KIM Jong-Wook PARK Choong-Hyo LIM Jung-Hoon JEONG Seong-Su PARK Jong-Kyu PARK Tae-gone Changwon National University Sarim-dongChangwon-siGyeongsangnam-do641-773Korea

Structure of the octagon-type ultrasonic motor was proposed and designed so as to allow the motor to drive small actuator. The stator of the motor consisted of the octagon shape elastic body and four rectangular plate ceramics. The four ceramics were attached to outer surfaces of the octagon elastic body. The same phase voltages were applied to the ceramics on horizontal surfaces, and 90° phase difference voltages were applied to the ceramics on vertical surfaces. When the AC voltage with 90° phase difference was applied in ceramics, the elliptical displacement of unimorph bars was generated by generating bending vibration. To find the maximum displacement model that generates elliptical displacement at the centers of the inner surfaces, the finite element analysis program ATILA was used. The analyzed results were compared to the experimental results. As a result, the speed and torque are increased linearly by increasing the input voltage and the speed of motors can be controlled by changing the applied voltages.

关键词： octagon-type 90° phase difference ultrasonic motor ATILA

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IMPROVED ENTROPY-ULTRA-BEE SCHEME FOR THE EULER SYSTEM OF GAS DYNAMICS

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Journal of Computational Mathematics 2017年第2期35卷 121-151页

作者： Rongsan Chen Dekang mao School of Mathematics and Physics China University of Geosciences Wuhan China Department of Mathematics Shanghai University Shanghai China

The Entropy-Ultra-Bee scheme was developed for the linear advection equation and extended to the Euler system of gas dynamics in [13]. It was expected that the technology be applied only to the second characteristic field of the system and the computation in the other two nonlinear fields be implemented by the Godunov scheme. However, the numerical experiments in [13] showed that the scheme, though having improved the wave resolution in the second field, produced numerical oscillations in the other two nonlinear fields. Sophisticated entropy increaser was designed to suppress the spurious oscillations by increasing the entropy when there are waves in the two nonlinear fields presented. However, the scheme is then not efficient neither robust with problem-related parameters. The purpose of this paper is to fix this problem. To this end, we first study a 3 × 3 linear system and apply the technology precisely to its second characteristic field while maintaining the computation in the other two fields be implemented by the Godunov scheme. We then follow the discussion for the linear system to apply the Entropy-Ultra-Bee technology to the second characteristic field of the Euler system in a linearlized field-by- field fashion to develop a modified Entropy-Ultra-Bee scheme for the system. Meanwhile a remark is given to explain the problem of the previous Entropy-Ultra-Bee scheme in [13]. A reference solution is constructed for computing the numerical entropy, which maintains the feature of the density and flats the velocity and pressure to constants. The numerical entropy is then computed as the entropy cell-average of the reference solution. Several limitations are adopted in the construction of the reference solution to further stabilize the scheme. Designed in such a way, the modified Entropy-Ultra-Bee scheme has a unified form with no problem-related parameters. Numerical experiments show that all the spurious oscillations in smooth regions are gone and the results ar

关键词： Entropy-Ultra-Bee scheme Step-reconstruction Characteristic field Referencesolution.

Evidence of the Presence of Genetically Modified Foods in the Sudano-Sahelian Zones of Cameroon

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Food and Nutrition Sciences 2014年第10期5卷 922-928页

作者： Djoulde Darman Roger Sobda gone Department of Agriculture Livestock and Postharvest Technology The Higher Institute of Sahel University of Maroua Maroua Cameroon Institute of Agricultural Research for Development (IRAD) Maroua Research Center Maroua Cameroon

Concerns of Africans with transgenic foods and genetically modified organisms seem to have minor repercussions in general on the use and the commercialisation of these products on African markets and particularly in the northern sudano-sahelian zone of Cameroun. In this line, different crops (cotton, and maize) and some commercialized branded food products were sampled on local farms, markets and chops. Evaluation of the presence or absence of GMO was performed using labelling system, completed by the laboratory analysis using PCR methods combined with the electrophoresis. Amongst all collected items, sampled cotton of varieties IRMA L484, IRMA L457 and maize varieties ATP SRY (CHC 202), ECKEBIL (CLH 103), PAN 4P-767BR, PAN 5Q-433B and PAN 6Q-445B, were found to contain the foreign genetic material. Amongst processed commercialised brand products, 39 were found to contain genetically modified ingredients. Most were maize (glucose and syrup) and soya (lecithin).

关键词： Food GMO Safety Labelling North Cameroun

Axenfeld-Reiger syndrome: A search for the missing links

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World Journal of Clinical Cases 2023年第29期11卷 7034-7042页

作者： Arvind Kumar Morya Prasanna Venkatesh Ramesh Sony Sinha Prateek Nishant Nazia Nain Ravi NaikRamavath Chetana gone Ripunjay Prasad Department of Ophthalmology All India Institute of Medical SciencesBibi NagarHyderabad 508126TelanganaIndia Glaucoma Medical Officer Mahathma Eye Hospital Private LimitedThennurTrichy 620017Tamil NaduIndia Department of Ophthalmology-Vitreo-Retina and Oculoplasty All India Institute of Medical SciencesPatnaPatna 801507BiharIndia Department of Ophthalmology All India Institute of Medical SciencesPatnaPatna 801507BiharIndia Department of Ophthalmology RP Eye InstituteDelhi 110001DelhiIndia

BACKGROUND Axenfeld-Rieger syndrome(ARS)is a rare cause of congenital glaucoma and may result in loss of *** is mostly autosomal dominant in nature characterized by developmental abnormalities in the angle of anterior chamber and iris of the eye,also associated with structural abnormalities in the *** To study and observe the demographics and clinical findings in a very rare ocular disease known as *** Case records of symptomatic patients attending Ophthalmology outpatient department and diagnosed to have ocular hypertension or glaucoma in 3 years from March 2017 to March 2020 were evaluated to search for cases diagnosed with *** of all patients diagnosed with ARS were then analysed for demographic and clinical characterization as well as management and success of *** Eight out of ten patients with positive clinical signs were symptomatic and had *** of these patients had limbal stem cell deficiency and another had vernal *** Clinical characterization of ARS is important for making a definitive diagnosis and determining prognosis.

关键词： Axenfeld-Reiger Syndrome Glaucoma Limbal stem cell deficiency Vernal keratoconjuctivitis

Giant hepatocellular carcinoma

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Hepatobiliary Surgery and Nutrition 2021年第4期10卷 583-584页

作者： Gang Xu Yilei mao Department of Liver Surgery Peking Union Medical College(PUMC)HospitalPUMC and Chinese Academy of Medical SciencesBeijingChina

A 40-year-old female presented with progressive abdominal enlargement for 6 months(Panel A),along with severe abdominal distension and *** had not gone to hospital because she assumed herself to be pregnant,until the ... 详细信息

关键词： hepatocellular assumed Giant

Ferroelectric and piezoelectric properties of SrZrO_3-modified Bi_(0.5)Na_(0.5)TiO_3 lead-free ceramics

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Transactions of Nonferrous Metals Society of China 2014年第S1期24卷 146-151页

作者： Adnan MAQBOOL Ali HUSSAIN Jamil Ur RAHMAN Jong Kyu PARK Tae gone PARK Jae Sung SONG Myong Ho KIM Engineering Research Center for Integrated Mechatronics Materials and Components Changwon National University Korea Electrotechnology Research Institute

The lead-free SrZrO3-modified Bi0.5Na0.5TiO3(BNT-SZ100 x, with x=0-0.15) ceramics were fabricated by a conventional solid-state reaction method. The effects of SZ addition on BNT ceramics were investigated through X-ray diffraction(XRD), scanning electron microscopy(SEM), ferroelectric and electric field-induced strain characterizations. XRD analysis revealed a pure perovskite phase without any traces of secondary phases. Ferroelectric and bipolar field induced-strain curves indicated a disruption of ferroelectric order upon SZ addition into BNT ceramics. A maximum value of remnant polarization(32 μC/cm2) and piezoelectric constant(102 pC/N) was observed at 5%(mole fraction) of SZ. Maximum value of the electric field-induced strain(Smax=0.24%) corresponding to normalized strain(Smax/Emax= d*33= 340 pm/V) was obtained at BNT-SZ9.

关键词： lead-free ceramics BNT perovskite structure field induced strain

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校园文苑 2003年第15期 23-27页

作者： gone 山东省淄博市张店区南定中学初三(1)班 255051

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此岸苍穹，彼岸无穷——缅怀维克多·崔

音乐大观 2008年第12期 50-51页

作者： Mr.gone

最初了解到维克多·崔是在一篇关于俄罗斯左翼下活动小史的文章中,那时他以苏联天王摇滚歌手兼无政府主义者的身份被提及,在80年代末发起成立了全苏无政府工团联合会。或许在他身上散发有像巴枯宁和克鲁泡特金一样的政治斗士的气质,但... 详细信息

最初了解到维克多·崔是在一篇关于俄罗斯左翼下活动小史的文章中,那时他以苏联天王摇滚歌手兼无政府主义者的身份被提及,在80年代末发起成立了全苏无政府工团联合会。或许在他身上散发有像巴枯宁和克鲁泡特金一样的政治斗士的气质,但更多的影响也许是在摇滚乐方面的,因为在那个时代,一直到现在,我们都称他为——苏联的猫王。在俄罗斯最繁华的阿尔巴特大街上还有一面他的纪念墙,每年都有成千上万的青年从俄罗斯的四面八方风尘而来,坐在那座满是涂鸦与鲜花的墙下,朗诵诗歌,重唱他的歌曲,或者只是静静的坐着抽烟,喝酒,看着他觞逝的面容。

关键词：维克多阿尔巴特克鲁泡特金小史巴枯宁巴拉莱卡琴我不知道人能牺牲所现实愈义