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上海宝钢工程设计 2000年第4期14卷 65-68页

作者： walter,m 刘闯

Cigarette smoking, dietary habits and genetic polymorphisms in GSTT1, GSTm1 and CYP1A1 metabolic genes: A case-control study in oncohematological diseases

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世界临床肿瘤学杂志：英文版 2016年第5期7卷 395-405页

作者： maría Belén Cerliani walter Pavicic Juan Antonio Gili Graciela Klein Silvia Saba Silvina Richard Instituto multidisciplinario de Biología Celular (CIC UNLP CONICET) Laboratorio de Epidemiología Genética (ECLAmC CEMIC CONICET CABA) Unidad de Diagnóstico Tratamiento y Sostén de Enfermedades Hematológicas Hospital Interzonal General de Agudos Prof. Dr. Rodolfo Rossi

AIm To analyze the association between oncohematological diseases and GSTT1 /GSTm1 /CYP1A1 polymorphisms, dietary habits and smoking, in an argentine hospitalbased case-control *** This hospital-based case-control study involved 125 patients with oncohematological diseases and 310 control subjects. A questionnaire was used to obtain sociodemographic data and information about habits. Blood samples were collected, and DNA was extracted using salting out methods. Deletions in GSTT1 and GSTm1 (null genotypes) were addressed by PCR. CYP1A1 mspI polymorphism was detected by PCR-RFLP. Odds ratio(OR) and 95%CI were calculated to estimate the association between each variable studied and oncohematological *** Women showed lower risk of disease compared to men(OR 0.52, 95%CI: 0.34-0.82, P = 0.003). Higher levels of education(> 12 years) were significantly associated with an increased risk, compared to complete primary school or less(OR 3.68, 95%CI: 1.82-7.40, P moking categories showed association with oncohematological diseases. Regarding dietary habits, consumption of grilled/barbecued meat 3 or more times per month showed significant association with an increased risk of disease(OR 1.72, 95%CI: 1.08-2.75, P = 0.02). Daily consumption of coffee also was associated with an increased risk(OR 1.77, 95%CI: 1.03-3.03, P = 0.03). Results for GSTT1, GSTm1 and CYP1A1 polymorphisms showed no significant association with oncohematological diseases. When analyzing the interaction between polymorphisms and tobacco smoking or dietary habits, no statistically significant associations that modify disease risk were found. CONCLUSION We reported an increased risk of oncohematological diseases associated with meat and coffee intake. We did not find significant associations between genetic polymorphisms and blood cancer.

关键词： Cancer Oncohematological disease Casecontrol study Lifestyle Diet Tobacco Xenobiotic metabolizing genes GSTT1 GSTm1 CYP1A1

Association between heart failure severity and mobility in geriatric patients: an in-clinic study with wearable sensors

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Journal of Geriatric Cardiology 2022年第9期19卷 660-674页

作者： Tobias Braun Anna Wiegard Johanna Geritz Clint Hansen Kim Eng Tan Hanna Hildesheim Jennifer Kudelka Corina maetzler Julius Welzel Robbin Romijnders walter maetzler Philipp Bergmann Department of Neurology Kiel UniversityArnold-Heller-Straße 324105 KielGermany Department of Internal medicine I Christian-Albrechts-University of KielArnold-Heller-Straße 324105 KielGermany Department of Applied Health Sciences Division of PhysiotherapyHochschule für Gesundheit(University of Applied Sciences)Gesundheits-campus 6-844801 BochumGermany HSD Hochschule Döpfer(University of Applied Sciences) Waidmarkt 3 und 950676 CologneGermany

BACKGROUND Individuals with heart failure(HF) frequently experience limitations in mobility, but specific aspects of these limitations are not well understood. This study investigated the association of HF severity, based on the New York Heart Association(NYHA) classes, with digital mobility outcomes(DmOs) and handgrip strength in older inpatients with *** For this explorative analysis, hospital admission and discharge data from an ongoing, prospective cohort study were used. The sample included older participants with HF and a sub-sample of heart-healthy individuals. Participants were equipped with a wearable inertial measurement unit(ImU) system during mobility performance(balancing, sit-to-stand transfer,walking). We analyzed the association between 17 DmOs and HF severity with multiple linear regression *** The total sample included 61 older participants(65–97 years of age, 55.7% female). Of all DmOs, only sway path in a semi-tandem stance position(m/s^(2)) showed a relevant association with NYHA classes(admission: β =-0.28, P = 0.09;discharge:β =-0.39, P = 0.02). Handgrip strength showed a trend towards a significant association(admission: β =-0.15, P = 0.10;discharge:β =-0.15, P = 0.19).CONCLUSIONS This is to our best knowledge the first analysis on the association of HF severity and ImU-based DmOs. Sway path and handgrip strength may be the most promising parameters for monitoring mobility aspects in treatment of HF.

关键词： severity wear limitations

Effect of Wetting on the Ability of Nanomaterials to Act as Effective Catalysts

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Advances in Chemical Engineering and Science 2016年第5期6卷 541-552页

作者： michael W. Cross walter J. Varhue m. Ryan mcDevitt Darren L. Hitt David Crawford School of Engineering Norwich University Northfield VT USA School of Engineering University of Vermont Burlington VT USA

The ability of some nanostructured materials to perform as effective heterogeneous catalysts is potentially hindered by the failure of the liquid reactant to effectively wet the solid catalyst surface. In this work, two different chemical reactions, each involving a change of phase from liquid to gas on a solid catalyst surface, are investigated. The first reaction is the catalyzed decomposition of a H2O2 monopropellant within a micro-chemical reactor chamber, decorated with RuO2 nanorods (NRs). The second reaction involves the electrolysis of dilute aqueous solutions of H2SO4 performed with the cathode electrode coated with different densities and sizes of RuO2 NRs. In the catalyzed H2O2 decomposition, the reaction rate is observed to decrease with increasing catalyst surface density because of a failure of the liquid to wet on the catalyst surface. In the electrolysis experiment, however, the reaction rate increased in proportion to the surface density of RuO2 NRs. In this case, the electrical bias applied to drive the electrolysis reaction also causes an electrostatic force of attraction between the fluid and the NR coated surface, and thus assures effective wetting.

关键词： Catalyst Nanomaterial Wetting

Probabilistic Seismic Hazard Assessment for Bridgetown-Barbados, Employing Subduction Interface Characteristic Earthquakes

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Journal of Civil Engineering and Architecture 2013年第11期7卷 1405-1422页

作者： walter Salazar Lyndon Brown Garth mannette Seismic Research Centre The University of the West lndies (UWI) St. Augustine Trinidad and Tobago Earthquake Unit The University of the West Indies (UWI) Mona Kingston Jamaica

A new probabilistic seismic hazard analysis was performed for the city of Bridgetown, Barbados, West Indies. Hazard computations have been performed using the standard Cornell-mcGuire approach based on the definition of appropriate seismogenic sources and expected maximum magnitudes, the authors take into consideration the possibility of large subduction interface earthquakes of magnitude 8.0-9.0 beneath the Barbados accretionary prism via application of a characteristic model and slip rates. The analysis has been conducted using a standard logic-tree approach. Uniform hazard spectra have been calculated for the 5% of critical damping and the horizontal component of ground motion for rock site conditions setting 5 return periods （95, 475, 975, 2,475 and 4,975 years） and spectral accelerations for 34 structural periods ranging from 0 to 3 s. The disaggregation results suggest that the magnitude-distance pair that dominates the hazard yields m 7.4 and 8.6 and a distance of 42.5 km in the Interface Subduction Zone beneath Barbados for the 475 and 975 years RP （return period）, respectively. An event with an m 8.0 at a distance of 107.5 km in the Intraplate Subduction Zone is the second scenario that dominates the hazard for both 475 and 975 years RP.

关键词： Tectonics seismogenic sources characteristic earthquakes recurrence interval disaggregation.

An Integrated and Evolutionary Dynamical Systems View of Climate Complexity

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International Journal of Geosciences 2013年第1期4卷 49-57页

作者： walter Ritter Ortíz Lorena Cruz Sección de Bioclimatología Centro de Ciencias de la Atmósfera UNAM Circuito Interior s/n Ciudad Universitaria Coyoacan México

The Earth shows a constant display of an organized complexity system, and its intrinsic capacity for sporadic self-organization constitutes its fundamental and profound mysterious property. A graphical method derived from the logistic phase space of precipitation is proposed to identify periods of abundance-scarcity of rain as well as El Nino presence in order to cope with climate change. The most striking result is that the majority of El Nino events on this graph are chaotic, in which the sign of the dominant eigenvalues of precipitation gives trends of scarcity on negative signs and abundance on positive signs, with eleven years periods.

关键词： Climate Change Complexity System Earth

Probabilistic Seismic Hazard Assessment for Jamaica

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Journal of Civil Engineering and Architecture 2013年第9期7卷 1118-1140页

作者： walter Salazar Lyndon Brown Garth mannette Seismic Research Centre The University of the West Indies (UWI) St. Augustine Trinidad and Tobago Earthquake Unit The University of the West Indies (UWI) Mona Kingston Jamaica

A probabilistic seismic hazard analysis was performed to generate seismic hazard maps for Jamaica. The analysis was then conducted using a standard logic-tree approach that allowed systematically taking into account the model-based （i.e., epistemic） uncertainty and its influence on the computed ground motion parameters. Hazard computations have been performed using a grid of sites with a space of 0.05 degrees. Two different computation methodologies have been adopted： the standard approach based on the definition of appropriate seismogenic sources and the zone-free approach, which overcomes the ambiguities related with the definition of the seismic sources solely reflecting the characteristics of the earthquake catalogue. A comprehensive and updated earthquake catalogue for Jamaica has been compiled for the years 1551-2010 and new empirical relationships amongst magnitudes mze-ms and mw-mb have been developed for the region. Uniform hazard spectra and their uncertainty have been calculated for the horizontal component of ground motion for rock site conditions and five return periods （95, 475, 975, 2,475 and 4,975 years） and spectral accelerations for 34 structural periods ranging from 0 to 3 s, and 5% of critical damping. The spectral accelerations have been calculated to allow the definition of seismic hazard in Jamaica according to the International Building Code 2012. The disaggregation analysis for Kingston metropolitan Area suggests that the magnitude-distance pair that contributes most to the hazard corresponds to events with m 7.8 and m 7.0 in the Enriquillo Plantain Garden Fault and the Jamaican Faults at a distance of 28 km and 18 km for short and long period structures respectively corresponding to 2,475 years return period. However, for long period structures, a substantial contribution is found for a m 8.2 at a distance of 198 km in the Oriente Fault Zone.

关键词： Earthquake catalogue GmPE's (ground motion prediction equations) seismic hazard response spectrum disaggregationanalysis.

Largely Suppressed magneto-Thermal Conductivity and Enhanced magneto-Thermoelectric Properties in PtSn_(4)

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Research 2020年第1期2020卷 769-776页

作者： Chenguang Fu Satya NGuin Thomas Scaffidi Yan Sun Rana Saha Sarah JWatzman Abhay KSrivastava Guowei Li walter Schnelle Stuart SPParkin Claudia Felser Johannes Gooth max Planck Institute for Chemical Physics of Solids 01187 DresdenGermany Department of Physics University of CaliforniaBerkeleyCA 94720USA Department of Physics University of TorontoTorontoOntario M5S 1A7Canada max Planck Institute of microstructure Physics 06120 HalleGermany Department of mechanical and materials Engineering University of CincinnatiCincinnatiOH 45219USA Institute of Physics Martin Luther University Halle-Wittenberg06120 HalleGermany

Highly conductive topological semimetals with exotic electronic structures offer fertile ground for the investigation of the electrical and thermal transport behavior of ***,we find that the layer-structured Dirac semimetal PtSn4 exhibits a largely suppressed thermal conductivity under a magnetic *** low temperatures,a dramatic decrease in the thermal conductivity of PtSn4 by more than two orders of magnitude is obtained at 9 ***,PtSn_(4)shows both strong longitudinal and transverse thermoelectric responses under a magnetic *** power factor and Nernst power factor of approximately 80-100μW·cm^(-1)·K^(-2)are obtained around 15K in various magnetic *** a result,the thermoelectric figure of merit zT is strongly enhanced by more than 30 times,compared to that without a magnetic *** work provides a paradigm for the decoupling of the electron and hole transport behavior of highly conductive topological semimetals and is helpful for developing topological semimetals for thermoelectric energy conversion.

关键词： field particles topological

High body mass index predicts multiple prostate cancer lymph node metastases after radical prostatectomy and extended pelvic lymph node dissection

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Asian Journal of Andrology 2020年第3期22卷 323-329页

作者： Antonio B Porcaro Alessandro Tafuri marco Sebben Tania Processali marco Pirozzi Nelia Amigoni Riccardo Rizzetto Aliasger Shakir maria Angela Cerruto matteo Brunelli Salvatore Siracusano walter Artibani Department of Urology Azienda Ospedaliera Universitaria Integrata VeronaVerona 37126Italy USC Institute of Urology and Catherine and Joseph Aresty Department of Urology Keck School of MedicineUniversity of Southern CaliforniaLos AngelesCA 90033USA Department of Pathology Azienda Ospedaliera Universitaria Integrata VeronaVerona 37126Italy.

Our aim is to evaluate the association between body mass index(BmI)and preoperative total testosterone(TT)levels with the risk of single and multiple metastatic lymph node invasion(LNI)in prostate cancer patients undergoing radical prostatectomy and extended pelvic lymph node *** BmI,basal levels of TT,and prostate-specific antigen(PSA)were evaluated in 361 consecutive patients undergoing radical prostatectomy with extended pelvic lymph node dissection between 2014 and 2017・Patients were grouped into either nonmetastatic,one,or more than one metastatic lymph node invasion *** association among clinical factors and LNI was *** was detected in 52(14.4%)patients:28(7.8%)cases had one metastatic node and 24(6.6%)had more than one metastatic *** the overall study population,BmI correlated inversely with TT(r=-0.256;Pmetastases,BmI inversely correlated with TT(r=-0.282;Pmetastasis,this correlation was *** the overall study population,BmI(odds ratio[OR]=1.268;P=0.005)was the only in dependent clinical factor associated with the risk of multiple metastatic LNI compared to cases with one metastatic *** the nonmetastatic group,TT was lower in patients with BmI>28 kg m^2(Pmedian number of positive nodes was higher in patients with BmI>28 kg m^2(P-0.048).In our study,overweight and obese patients had a higher risk of harboring multiple prostate cancer lymph node metastases and lower TT levels when compared to patients with normal BmI.

关键词： body mass index metastatic prostate cancer multiple lymph node invasion overweight-obesity preoperative testosterone level

当今世界液化石油气（LPG）市场——据预测，2009～2013年将继续保持供大于求，剩余LPG仍将应用于石化生产，同期石化工业需求总量将增加7％

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世界石油工业 2010年第6期17卷 24-28页

作者： walter m.Hart Purvin & Gertz咨询公司高级咨询师

过去两年中，全球液化石油气（liquified petroleum gas，LPG）市场价格剧烈动荡。以丙烷为例，2008年7月欧洲西北部平均现货价格大致为950美元／t，同年12月份跌至不足340美元／t，2010年3月，又回升至700美元／t。

关键词：液化石油气市场价格供大于求石化生产石化工业 LPG 预测世界