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储集层砂岩中黏土微孔隙度:定量电子显微镜在岩石物理评价中的应用

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国外油气勘探 1996年第5期8卷 556-562,592页

作者： andrew hurst 陈会鑫西安地质学院

粘土矿物的微孔隙度是利用岩石薄片的反向散射电子显微图象的计算机辅助图象分析测定的。成岩高岭石具有种种结构,其微孔隙度值分布范围较广,从15%到61%。成岩绿泥石通常具有均匀的颗粒膜结构,微孔隙度约为50%。纤维状伊利石黏土很难用... 详细信息

粘土矿物的微孔隙度是利用岩石薄片的反向散射电子显微图象的计算机辅助图象分析测定的。成岩高岭石具有种种结构,其微孔隙度值分布范围较广,从15%到61%。成岩绿泥石通常具有均匀的颗粒膜结构,微孔隙度约为50%。纤维状伊利石黏土很难用同样的方法表征(已记录的平均微孔隙度为63%),但是由扫描电子显微镜分析所得的立体图象对的分析表明,伊利石的微孔隙度约达90%。黏土微孔隙度资料可用于计算砂岩中黏土矿物中的有效孔隙体积和黏土束缚水的体积。将黏土的重量百分比转化为体积百分比很重要。微孔隙度数据对于那些含水饱和度与黏土矿物类型、结构和体积有关的地方的V_(页岩)评价是有价值的。

关键词：储集层砂岩粘土孔隙度岩石物理评价

重矿物分析对比北海北部奥斯伯格油田岩石地层学和储集模式的应用

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海洋石油 1989年第4期15卷 63-68,57页

作者： andrew hurst 施旭东

序论砂岩储集体评价中遇到的主要问题之一,是有关特殊砂岩的物源区及其搬运方向,具有很大的不确定性。在制定开发方案时,关键是最大限度地了解对砂体分布,以便评价砂体几何形态和与其总体的各向异性渗透率(例如河床方向)。通过沉积学和... 详细信息

序论砂岩储集体评价中遇到的主要问题之一,是有关特殊砂岩的物源区及其搬运方向,具有很大的不确定性。在制定开发方案时,关键是最大限度地了解对砂体分布,以便评价砂体几何形态和与其总体的各向异性渗透率(例如河床方向)。通过沉积学和岩石学的方法,结合研究所给出最佳效果而推断出搬运方向。沉积学的方法包括相分析、粒度测定和沉积构造的研究。沉积构造的方向,可通过倾角测井识别。岩石学的方法为关于砂岩组的富集,从而利用它指示物源区的性质和划分不同的砂岩区,由此确定搬迁方向。

关键词：矿物分析沉积构造物源区倾角测井砂体分布储集体开发方案沉积学渗透率河道砂

Comparative Analysis of the Determinants of China's State-owned Outward Direct Investment in OECD and Non-OECD Countries

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China & World Economy 2011年第4期19卷 74-91页

作者： Luke hurst Crawford School of Economics and Government The Australian National University

Chinese outward direct investment （ODI） is expanding at an unprecedented rate. The present study augments the understanding of the determinants and drivers of Chinese ODI. It reviews the literature on Chinese 0191 and analyzes investment by state-owned enterprises （SOE） for the period 2003-2008, focusing specifically on the differences between the determinants of Chinese investment in developed （OECD） and developing （non-OECD） economies. In addition, the study assesses the appropriateness of the general framework used for investigating ODI determinants （Dunning＇s eclectic paradigm） to analyze the experience of Chinese SOE. The findings indicate that Dunning＇s eclectic paradigm provides an excellent theoretical framework for analyzing the determinants of Chinese SOE investment in developed countries, and provides a good starting point for analysis of Chinese investment in developing countries. However, Dunning＇s specification requires refinement for developing countries. This paper finds a distinct difference between the motivations for Chinese SOE investment in developed and developing countries.

关键词： China investment determinants outward direct investment state-owned enterprise

Augmented reality for supporting geo-spatial planning:An open access review

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Visual Informatics 2023年第4期7卷 1-12页

作者： Reint Jansen Frida Ruiz Mendoza William hurst Laboratory of Geo-Information Science and Remote Sensing Wageningen University&ResearchThe Netherlands Information Technology Group Wageningen University&ResearchThe Netherlands

Augmented reality is gaining traction across many *** of these is participation within geo-spatial planning *** interactive and three-dimensional nature of augmented reality is suitably placed to cater for a higher quality of communication and information exchange in planning ***,this research provides an overview of the use of AR in planning processes,specifically regarding the participation aspect,through an open-access systematic literature review,for which the investigation identifies 35 articles concerning the current state-of-the-art of augmented reality in *** indicate the rather limited use of augmented reality in the overall planning process due to technical ***,it shows to be a useful technology where it allows for higher user engagement and a clearer understanding among users in planning ***,in participation,the technology offers a motivational solution and creates an overall higher acceptance and awareness of the plan,making the participants more engaged and represented in the planning process.

关键词： Augmented reality Systematic literature review Participation Planning Geo-visualization

Associations between maternal vitamin D status and porcine litter characteristics throughout gestation

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Journal of Animal Science and Biotechnology 2023年第2期14卷 806-813页

作者： Claire Stenhouse Emma hurst Richard J.Mellanby Cheryl J.Ashworth Functional Genetics and Development Division The Roslin Institute and Royal(Dick)School of Veterinary StudiesUniversity of EdinburghMidlothian EH259RGUK Current Affiliation Department of Animal ScienceTexas A&M UniversityCollege StationTexas 77843‑2471USA Clinical Sciences Division The Roslin Institute and Royal(Dick)School of Veterinary StudiesUniversity of EdinburghMidlothian EH259RGUK.

Emerging evidence suggests an important role of vitamin D in the establishment and maintenance of pregnancy,and the regulation of foetal growth across mammalian ***,the temporal changes in maternal vitamin D sta-tus throughout gestation in the pig and the relationship between maternal vitamin D status and litter characteristics of interest across gestation remain poorly understood and *** abundance of 25(OH)D in maternal plasma was quantified by HPLC–MS/MS at gestational days(GD)18,30,45,60 and 90(n=5–11 gilts/GD).Maternal plasma 25(OH)D concentrations significantly increased between GD18 and GD30(P<0.05).The relationship between maternal vitamin D metabolite concentrations and litter characteristics of interest including gilt weight,ovulation rate,mean litter weight,number of live foetuses,percentage prenatal survival,and sex ratio of the litter was *** 25(OH)D(P=0.059)concentrations tended to be positively associated with percentage prenatal survival on *** GD90,maternal 25(OH)D(P<0.05)concentrations were inversely associated with gilt *** plasma 25(OH)D concentrations were inversely associated with the percentage of male foetuses in the litter on GD90(P<0.05).This study has provided novel insights into temporal changes in maternal vitamin D status throughout ges-tation and the relationship between maternal vitamin D status and the economically important litter characteristics of gilt weight,percentage prenatal survival and percentage of male foetuses in the *** the understanding of the role of vitamin D across important developmental timepoints in relation to foetal growth is essential to improve reproductive success in livestock species.

关键词： Porcine Pregnancy Vitamin D

Recent Advances on Citrus yellow vein clearing virus in Citrus

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Horticultural Plant Journal 2020年第4期6卷 216-222页

作者： Cuihua Liu Hai Liu John hurst Michael P Timko Changyong Zhou Citrus Research Institute Southwest UniversityChongqing 400715China Department of Biology University of VirginiaCharlottesvilleVA 22904USA

Citrus yellow vein clearing virus(CYVCV)is the causal agent of yellow vein clearing disease,a significant and devastating disease of most citrus species including lemon and sour ***,a single-strand positive-sense RNA virus containing six ORFs(Open Reading Frames),represents a new species in the genus Mandarivirus of the Alphaflexiviridae *** virus can cause particularly serious damage,resulting in reduced tree vigor,lower yields,and decreased marketability of fruit production,and it has been found in India,Turkey,Pakistan,China and *** we described the geographical distribution of the virus,its transmission mode by grafting,mechanical inoculation,and insects,as well as currently available techniques for *** addition,we also discussed practical measures aimed at controlling the disease and provided theoretical guidance to prevent the acquisition and spread of the disease that is a significant step toward ensuring the health of the citrus industry.

关键词： Citrus yellow vein clearing virus geographical distribution viral detection practical management

Improving Interventions on Cardiovascular Disease and Diet: A Policy Incentive Analysis

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Health 2023年第6期15卷 569-621页

作者： Sandra hurst Keigwin School of Nursing Jacksonville University Jacksonville USA

Various Cardiovascular Diseases (CVDs) can be catastrophic and can lead to irreversible outcomes. Despite improved interventions for CVD prevention awareness, there continues to be discussion and research on diet-related CVD and mortality without addressing the problem. Instead of prioritizing public guidelines and policies, policymakers should understand CVD and address population barriers to adhering to a healthy diet that decreases CVD risk. Therefore, this project aims to analyze federal healthy food incentive policies to promote healthy diet behaviors that reduce CVD risk. The method used was existing data for a comparative policy analysis that included a policy proposal process: phases of progression, measures, and a policy model with data collection and requirements. This analysis compared a current federal food incentive program versus the proposed program. Results of the final analysis derived from the literature review and collected data stated consuming foods from the Mediterranean and other low-fat and low-salt diets reduced CVD risks that also reduced other risks secondary to CVD, such as obesity, diabetes, and Cerebrovascular Accident (CVA). Comparatively, combined healthy food incentives and disincentives were more effective for improving healthy behaviors than, in some cases, even after incentives were removed. Therefore, this policy analysis supports the indication for incentive policy change. However, the lack of federal stakeholders’ response to key policy changes upon proposal submission may require other methods of proposal dissemination. Nonetheless, focusing analysis on various Food Insecurity Nutrition Incentive (FINI) programs instead of one, multi-state program, which may have improved analysis outcomes, was the lesson learned.

关键词： CVD Risk Prevention Diets Dietary Guidelines American Stroke/Heart Association (ASA/AHA) CVA Federal Healthy Food Incentives

Re-expression of DIRAS3 and P53 induces apoptosis and impaired autophagy in head and neck squamous cell carcinoma

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Military Medical Research 2021年第2期8卷 148-161页

作者： Zhe Liu Douglas R.hurst Xing Qu Li-Guang Lu Chen-Zhou Wu Yu-Yu Li Yi Li State Key Laboratory of Oral Diseases&National Clinical Research Center for Oral Diseases West China Hospital of StomatologySichuan UniversityChengdu 610041China Department of Head and Neck Oncology West China Hospital of StomatologySichuan UniversityChengdu 610041China Department of Pathology University of Alabama at BirminghamBirminghamAL 35216USA Department of Evidence Based Stomatology West China Hospital of StomatologySichuan UniversityChengdu 610041China.

Background:p53 and DIRAS3 are tumor suppressors that are frequently silenced in *** this study,we sought to determine whether the concurrent re-expression of p53 and DIRAS3 could effectively induce head and neck squamous cell carcinoma(HNSCC)cell ***:CAL-27 and SCC-25 cells were treated with Ad-DIRAS3 and rAd-p53 to induce re-expression of DIRAS3 and p53 *** effects of DIRAS3 and p53 re-expression on the growth and apoptosis of HNSCC cells were examined by TUNEL assay,flow cytometric analysis and *** effects of DIRAS3 and p53 re-expression on Akt phosphorylation,oncogene expression,and the interaction of 4 E-BP1 with eIF4 E were determined by real-time PCR,Western blotting and immunoprecipitation *** ability of DIRAS3 and p53 re-expression to induce autophagy was evaluated by transmission electron microscopy,LC3 fluorescence microscopy and Western *** effects of DIRAS3 and p53 re-expression on HNSCC growth were evaluated by using an orthotopic xenograft mouse ***:TUNEL assay and flow cytometric analysis showed that the concurrent re-expression of DIRAS3 and p53 significantly induced apoptosis(P<0.001).MTT and flow cytometric analysis revealed that DIRAS3 and p53 reexpression significantly inhibited proliferation and induced cell cycle arrest(P<0.001).Mechanistically,the concurrent re-expression of DIRAS3 and p53 down-regulated signal transducer and activation of transcription 3(STAT3)and upregulated p21WAF1/CIP1 and Bax(P<0.001).DIRAS3 and p53 re-expression also inhibited Akt phosphorylation,increased the interaction of eIF4 E with 4 E-BP1,and reduced the expression of c-Myc,cyclin D1,vascular endothelial growth factor(VEGF),fibroblast growth factor(FGF),epidermal growth factor receptor(EGFR)and Bcl-2(P<0.001).Moreover,the concurrent re-expression of DIRAS3 and p53 increased the percentage of cells with GFP-LC3 puncta compared with that in cells treated with control adenovirus(50.00%±4.55%vs.4.67%±1.25%,P<

关键词： DIRAS3 p53 Apoptosis Autophagy Head and neck squamous cell carcinoma

A study of chlorophyll-like and phycobilin pigments in the C endosymbiont of the apple- snail Pomacea canaliculata

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BIOCELL 2012年第2期36卷 47-55页

作者： ISRAEL A.VEGA FEDERICO A.DELLAGNOLA JORGE A.hurst MARTÍN S.GODOY ALFREDO CASTRO-VAZQUEZ Laboratorio de Fisiologia(IHEM-CONICET) and Departamento de Morfología y Fisiología(Facultad de Ciencias MédicasUniversidad Nacional de Cuyo)Casilla de Correo 335500 MendozaArgentina Instituto de Ciencias Básicas-Universidad Nacional de Cuyo.Padre Jorge Contreras 1300.Parque Gral.San Martín 5500 Mendoza Departamento de Química Biológica.Facultad de Farmacia y Bioquímica Universidad de Buenos Aires.Present address:Instituto de Botánica Darwinion.Labardén 200B1642HYD Buenos Aires

Pigments present in the brown-greenish C morph of an intracellular endosymbiont of Pomacea canaliculata were *** extracts of the endosymbiotic corpuscles showed an absorption spectrum similar to that of *** fractions obtained from silica gel column chromatography of the acetone extracts(CI,CII and CIII),were studied by positive ion fast atom bombardment-mass spectrometry(FAB–MS)and hydrogen-nuclear magnetic resonance(H-NMR).Results indicated the presence of(1)a sterol in the yellow colored CI fraction;(2)a mixture of pheophorbides a and b in the major green fraction,CII;and(3)a modified pheophorbide a in the smaller green fraction,*** extracts of the C endosymbiont did not show evidence of the occurrence of C-phycocyanin,allophycocyanin or phycoerithrin(light absorption,fluorescence emission,and electrophoresis of the protein moieties)while cyanobacterial cells(Nostoc sp.)showed evidence of C-phycocyanin and *** possible phylogenetic and functional significance of the pigments present in the C endosymbiont is discussed.

关键词： symbiosis Cyanobacteria chloroplast photosynthetic pigments phylogeny