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基于新型复合材料的除湿换热器夏季及冬季工况实验研究

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基于新型复合材料的除湿换热器夏季及冬季工况实验研究

作者： Andres santiago Valarezo rivera 上海交通大学

学位级别：硕士

干燥剂涂层换热器(DCHE)被认为是一种新颖且有前景的技术,用于在提供舒适环境和通过除湿改善建筑物内部空气质量的过程中减少HVAC(加热,通风和空调)系统的能量消耗。并加湿气流。它通过将干燥剂材料涂覆到显热交换器的外表面来制造。干... 详细信息

干燥剂涂层换热器(DCHE)被认为是一种新颖且有前景的技术,用于在提供舒适环境和通过除湿改善建筑物内部空气质量的过程中减少HVAC(加热,通风和空调)系统的能量消耗。并加湿气流。它通过将干燥剂材料涂覆到显热交换器的外表面来制造。干燥剂材料硅胶在DCHE技术中被广泛采用。但是,它的吸附能力有限。在相同条件下,一些材料如吸湿盐与硅胶相比具有更高的吸附质量,但具有更高的再生温度和腐蚀的缺点。然后在本论文中,为了获得可在DCHE中采用的最佳干燥剂,提出了一种新型复合干燥剂材料硅胶和醋酸钠。为了验证新型复合干燥剂的实际性能,建立了一个实验装置,以测试其在温度,入口空气速度,再生水温和水冷温度的实验条件下的性能。新型复合干燥剂硅胶和醋酸钠涂层换热器(SASCHE)的性能实验研究是在中国上海市典型的夏季和冬季进行的。首先,分别对夏季和冬季的除湿-冷却和加湿-加热应用,再生温度,冷热水温度,进气风速,热性能系数(COPh)和能效等主要参数的影响进行了实验研究。。然后,将其性能与单一硅胶涂覆热交换器(SCHE),甲酸钾和硅胶涂覆热交换器(PSCHE)进行比较。在夏季,实验结果表明,新型复合干燥剂材料可以处理除湿-冷却过程,在冷却能力和效率方面具有优异的性能。与PSCHE和SCHE相比,SASCHE的除湿能力分别提高了10%和30%。在冬季加湿加热过程中,SASCHE的平均加湿能力是PSCHE和SCHE的两倍。此外,夏季的室内舒适条件满足高热水温度和低入口空气流速,冬季推荐低热水温度和高入口空气流速。最后,提出了出口空气温湿度比的数学模型。比较了实验结果和模拟数据,夏季和冬季的典型周期时间为720秒。在夏季,出口空气温度和湿度比的不确定性分别为15%和12%。在冬季,与理论结果相比,出口空气温度的不确定性为14%,出口空气湿度比为17%。数学模拟表明,DCHE在温度和湿度比方面的性能是时间的指数函数,并且取决于各种参数,例如再生水温度,循环时间和主要的干燥剂性质。

关键词：醋酸钠硅胶干燥剂涂层换热器加湿除湿

Dietary eubiotics of microbial muramidase and glycan improve intestinal villi,ileum microbiota composition and production trait of broiler

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Journal of Animal Science and Biotechnology 2024年第4期15卷 1723-1736页

作者： Sungbo Cho Shanmugam Suresh Kumar santiago Ramirez Rolando Valientes In Ho Kim Department of Animal Resource and Science Dankook UniversityCheonanChungnam 31116Korea Smart Animal Bio Institute Dankook University CheonanKorea DSM Nutritional Products Asia Pacific Mapletree Business CitySingapore 117440Singapore

Background Optimal gut health is important to maximize growth performance and feed efficiency in broiler chickens.A total of 1,365 one-day-old male Ross 308 broiler chickens were randomly divided into 5 treatments groups with 21 replicates,13 birds per *** present research investigated effects of microbial muramidase or a precision glycan alone or in combination on growth performance,apparent total tract digestibility,total blood carotenoid content,intestinal villus length,meat quality and gut microbiota in broiler *** included:NC:negative control(basal diet group);PC:positive control(basal diet+0.02%probiotics);MR:basal diet+0.035%microbial muramidase;PG:basal diet+0.1%precision glycan;and MRPG:basal diet+0.025%MR+0.1%PG,*** MRPG group increased the body weight gain and feed intake(P<0.05)compared with NC ***,it significantly increased total serum carotenoid(P<0.05)and MRPG altered the microbial diversity in ileum *** MRPG treatment group increased the abundance of the phylum Firmicutes,and family Lachnospiraceae,Ruminococcaceae,Oscillospiraceae,Lactobacillaceae,Peptostreptococcaceae and decreased the abundance of the phylum Campilobacterota,Bacteroidota and family *** with the NC group,the chickens fed MRPG showed significantly increased in duodenum villus length at end the *** In this study,overall results showed that the synergetic effects of MR and PG showed enhancing growth performance,total serum carotenoid level and altering gut microbiota composition of *** current research indicates that co-supplementation of MR and PG in broiler diets enhances intestinal health,consequently leading to an increased broiler production.

关键词： Broiler Intestinal morphology Microbial muramidase Precision glycan Probiotics

Exploring the thermophysical properties of natural deep eutectic solvents for gas capture applications: a comprehensive review

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Green Chemical Engineering 2024年第3期5卷 307-338页

作者： Ahmad Al-Bodour Noor Alomari Alberto Guti errez santiago Aparicio Mert Atilhan Department of Chemical and Paper Engineering Western Michigan University Department of Chemistry University of Burgos Faculty of Sciences

With the intensifying challenge of global warming driven largely by anthropogenic activities, effective greenhouse gas capture techniques are critical. This paper focuses on the role of deep eutectic solvents(DES) as promising agents for such capture at the source. We review the key DES-based methods for greenhouse gas capture, drawing conclusions from a thorough analysis of the existing literature. In particular, we examine the effect of DES structure on gas solubilities and explore the mechanism of gas solubility in DES through molecular simulation. We present a synthesis of state-of-the-art results in this area, assessing the potential of DES as an alternative to current industrial gas capture methods. Furthermore, we propose future research directions for the design of novel DES tailored to more specific applications.

关键词： Global warming Climate change Deep eutectic solvents Gas capture Gas separation

Predictive modeling of critical temperatures in magnesium compounds using transfer learning

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Journal of Magnesium and Alloys 2024年第4期12卷 1540-1553页

作者： Surjeet Kumar Russlan Jaafreh Subhajit Dutta Jung Hyeon Yoo santiago Pereznieto Kotiba Hamad Dae Ho Yoon School of Advanced Materials Science&Engineering Sungkyunkwan University Suwon 16419Republic of Korea

This study presents a transfer learning approach for discovering potential Mg-based superconductors utilizing a comprehensive target ***,a large source dataset(Bandgap dataset)comprising approximately∼75k compounds is utilized for pretraining,followed by fine-tuning with a smaller Critical Temperature(T_(c))dataset containing∼300 ***,there is a significant improvement in the performance of the transfer learning model over the traditional deep learning(DL)model in predicting ***,the transfer learning model is applied to predict the properties of approximately 150k *** are validated computationally using density functional theory(DFT)calculations based on lattice dynamics-related ***,to demonstrate the extended predictive capability of the transfer learning model for new materials,a pool of virtual compounds derived from prototype crystal structures from the Materials Project(MP)database is generated.T_(c) predictions are obtained for∼3600 virtual compounds,which underwent screening for electroneutrality and thermodynamic *** Extra Trees-based model is trained to utilize E_(hull)values to obtain thermodynamically stable materials,employing a dataset containing Ehull values for approximately 150k materials for *** with Ehull values exceeding 5 meV/atom were filtered out,resulting in a refined list of potential Mg-based *** study showcases the effectiveness of transfer learning in predicting superconducting properties and highlights its potential for accelerating the discovery of Mg-based materials in the field of superconductivity.

关键词： Superconductivity Critical temperature Transfer learning Crystal structure features Thermodynamic stability

Environmental drivers of long-term variations in the abundance of the red hocicudo mouse (Oxymycterus rufus) in Pampas agroecosystems

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Integrative Zoology 2024年第1期19卷 37-51页

作者： Laura Mariel CALFAYAN Regino CAVIA Jimena FRASCHINA Juan santiago GUIDOBONO Irene Laura GOROSITO María BUSCH Laboratorio de Ecología de Poblaciones Departamento de EcologíaGenética y EvoluciónFacultad de Ciencias Exactas y NaturalesUniversidad de Buenos Aires and Instituto de EcologíaGenética y Evolución de Buenos Aires(IEGEBA)Buenos AiresArgentina

During the 20th century,there has been an ongoing agricultural expansion and global warming,two of the main determinants influencing biodiversity changes in *** red hocicudo mouse(Oxymycterus rufus)inhabits subtropical grasslands and riparian habitats and has increased its abundance in recent years in central Argentina *** paper describes the long-term temporal changes in *** abundance in Exaltación de la Cruz department,Buenos Aires province,Argentina,in relation to weatherfluctuations and landscape features,as well as analyzes the spatio-temporal structure of captures of *** used generalized liner models,semi-variograms,the Mantel test,and autocorrelation functions for the analysis of rodent data obtained from trappings conducted between 1984 and *** showed an increase in abundance across the years of study,with its distribution depending on landscape features,such as habitat types and the distance *** rates showed a spatio-temporal aggregation,suggesting expansion from previously occupied *** was more abundant at lower minimum temperatures in summer,higher precipitation in spring and summer,and lower precip-itations in *** conditions affected *** abundance,but there was local variation that differed from global patterns of climate change.

关键词： agroecosystems climate change linear habitats Oxymycterus rufus rodent

Selenium Differentially Regulates Flavonoid Accumulation and Antioxidant Capacities in Sprouts of Twenty Diverse Mungbean(Vigna radiata(L.)Wilczek)Genotypes

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Phyton-International Journal of Experimental Botany 2024年第3期93卷 611-625页

作者： Fenglan Zhao Jizhi Jin Meng Yang Franklin Eduardo Melo santiago Jianping Xue Li Xu Yongbo Duan Anhui Provincial Engineering Laboratory for Efficient Utilization of Featured Resource Plants College of Life SciencesHuaibei Normal UniversityHuaibei235000China Department of Soil Science Federal Institute of PiauiUruçuíPiauí64860-000Brazil The Second Affiliated Hospital of Guizhou University of Traditional Chinese Medicine Guiyang550003China

Seed germination with selenium(Se)is promising for producing Se-biofortiﬁed ***(Vigna radiata(L.)Wilczek)sprout is freshly eaten as a salad dressed with sauce,making it superior for Se biofortiﬁ*** the Se safety range for the human body is extremely narrow,it is imperative to evaluate the genotypic responses of mungbean sprouts to *** study evaluated the Se enrichment capacity and interaction withﬂavonoids and antioxidant systems in sprouts of 20 mungbean *** treatment was done by immersing mung-bean seeds in 20μM sodium selenite solution for 8 ***,the biomass,Se amounts,ﬂavonoid(particularly vitexin and isovitexin)contents,antioxidant capacity,and key biosynthetic gene expressions were *** Se content was 2.0-7.0μg g^(-1) DW among the 20 mungbean *** treatment differentially affected the biomass,totalﬂavonoid,vitexin,isovitexin,antioxidant enzyme activities,and antioxidant capacities of the mungbean *** germplasms showed increased biomass(p<0.05),the highest increasing by 127%,but 13 did not phenotypically respond to Se *** and six germplasms showed varied levels of vitexin and isovitexin increment after Se treatment,the highest measuring 2.67-and 2.87-folds for vitexin and isovitexin,*** mungbeanﬂavonoid biosynthesis genes,chalcone synthase(VrCHS)and chalcone isomerase(VrCHI)were signiﬁcantly up-regulated in the germplasms with increased vitexin and isovitexin levels(p<0.05).Moreover,Se enrichment capacity was signiﬁcantly correlated with the vitexin,isovitexin,and antiox-idant *** conclusion,mungbean sprouts could be a useful Se-biofortiﬁed food,but the Se enrichment capacity and nutritional response must be determined for each germplasm before commercialization.

关键词： Antioxidant capacity gene expression genotypic variation isovitexin vitexin selenium

Human Papillomavirus Within Psoriasis Plaques in a Patient With Psoriasis:A Case Report

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International Journal of Dermatology and Venereology 2024年第1期7卷 55-57页

作者： Karen P.Lema-Matehu Nathalie P.Lascano-Gallegos santiago A.Palacios-Álvarez School of Medicine Eugenio Espejo UTE UniversityQuito 170147Ecuador Department of Dermatology Centro de la PielQuito 170508Ecuador

Introduction:Psoriasis may be triggered by several factors,and its pathophysiology is related to inflammatory cellular *** herein describe a patient with psoriasis who developed warts on multiple psoriasis plaques and was successfully treated with systemic subcutaneous *** presentation:A 67-year-old man who had been diagnosed with psoriasis 14 years previously developed an outbreak of small erythematous desquamative plaques distributed symmetrically on his arms and *** spiny whitish papules had developed over his previously established psoriasis *** appearance of the papules was consistent with viral *** patient was treated with systemic methotrexate injected subcutaneously and oral folic acid,both dosed *** treatment produced good ***:A remarkable feature of this case is that psoriasis was the first diagnosis and that human papillomavirus(HPV)appeared over widespread erythematous squamous *** pathophysiology of psoriasis is related to inflammatory cellular *** authors have reported that HPV proteins may stimulate keratinocyte *** have reported that HPV infection mostly stimulates systemic interleukin 17 production;consequently,HPV infection could provide a better environment for interleukin 17 secretion and facilitate new onset of *** report indicated that methotrexate was discontinued in a patient who presented with both pathologies,although we had very good ***:Psoriasis and HPV may be pathophysiologically *** may stimulate keratinocyte proliferation and systemic interleukin 17 production,resulting in a better environment for *** methotrexate injected subcutaneously resulted in a good outcome in our patient.

关键词： human papillomavirus methotrexate psoriasis case report

Failure to Rescue as a Quality Metric in Congenital Heart Surgeries in a High-Complexity Service Provider Institution Located in a Middle-Income Country

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Congenital Heart Disease 2024年第2期19卷 207-218页

作者： Gustavo Cruz santiago Pedroza Juan F.Vélez Jessica Largo Juan F.Tejada Jorge H.Mejía-Mantilla Departamento de Anestesiología Fundación Valle del LiliCali760032Colombia Centro de Investigaciones Clínicas Fundación Valle del LiliCali760032Colombia Departamento de Cardiología Pediátrica Fundación Valle del LiliCali760032Colombia Facultad de Medicina Universidad IcesiCali760031Colombia Unidad de Cuidado Intensivo Fundación Valle del LiliCali760032Colombia

Background:Failure to rescue has been an effective quality metric in congenital heart ***,mor-bidity and mortality depend greatly on non-modifiable individual factors and have a weak correlation with better-quality *** aim to measure the complications,mortality,and risk factors in pediatric patients undergoing congenital heart surgery in a high-complexity institution located in a middle-income country and compare it with other institutions that have conducted a similar ***:A retrospective observational study was conducted in a high-complexity service provider institution,in Cali,*** pediatric patients undergoing any congenital heart surgery between 2019 and 2022 were *** main outcomes evaluated in the study were complication,mortality,and failure to rescue *** and multivariate logistic regression analysis was performed with mortality as the outcome ***:We evaluated 308 congenital heart *** the outcomes,201(65%)complications occurred,23(7.5%)patients died,and the FTR of the entire cohort was 11.4%.The presence of a postoperative complication(OR 14.88,CI 3.06–268.37,p=0.009),age(OR 0.79,CI 0.57–0.96,p=0.068),and urgent/emergent surgery(OR 8.14,CI 2.97–28.66,p<0.001)were the most significant variables in predicting ***:Failure to rescue is an effective and comparable quality measure in healthcare institutions and is the major contributor to postoperative mortality in congenital heart *** our higher mortality and complication rate,we obtained a comparable failure to rescue rate to high-income countries’health institutions.

关键词： Congenital heart surgery complication mortality failure to rescue quality metric

Pancreatic neuroendocrine tumors:Are tumors smaller than 2 cm truly indolent?

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World Journal of Gastrointestinal Oncology 2024年第5期16卷 1756-1762页

作者： Sergio Hoyos Pablo Posada-Moreno Natalia Guzman-Arango Romario Chanci-Drago Jaime Chavez Alvaro Andrés-Duarte santiago Salazar-Ochoa Hepatobilary and Liver Transplant Unit Hospital Pablo Tobon Uribe and Gastrohepathology Group Universidad de AntioquiaMedellin 050034AntioquiaColombia Department of General Surgery Universidad Pontificia BolivarianaMedellín 050034AntioquiaColombia

BACKGROUND Pancreatic neuroendocrine tumors(PNETs)are relatively rare but rank as the second most common pancreatic *** can be functional,causing early metabolic disturbances due to hormone secretion,or non-functional and diagnosed later based on tumor size-related *** diagnoses of PNETs under 2 cm in size have sparked debates about their management;some practitioners advocate for surgical removal and others suggest observation due to the tumors’lower potential for ***,it is unclear whether managing these small tumors expectantly is truly *** To evaluate poor prognostic factors in PNETs based on tumor size(>2 cm or<2 cm)in surgically treated *** This cohort study included 64 patients with PNETs who underwent surgical resection between 2006 and 2019 at a high-complexity reference hospital in Medellín,*** assess patient survival,quarterly follow-ups were conducted during the first year after surgery,followed by semi-annual con-sultations at the hospital's hepatobiliary surgery *** variables were described using absolute and relative frequencies,and quantitative variables were expressed using measures of central tendency and their corresponding measures of *** The presence of lymph node involvement,neural involvement,and lymphovascular invasion were all associated with an increased risk of mortality,with hazard ratios of 5.68(95%CI:1.26–25.61,P=0.024),6.44(95%CI:1.43–28.93,P=0.015),and 24.87(95%CI:2.98–207.19,P=0.003),*** involvement and lymphovascular invasion were present in tumors smaller than 2 cm in diameter and those larger than 2 cm in *** recurrence rates between the two tumor groups were furthermore similar:18.2%for tumors smaller than 2 cm and 21.4%for tumors larger than 2 *** survival was additionally comparable between the two tumor *** Tumor size does not dictate prognosis;lymph node and lymphovascular involvement a

关键词： Neuroendocrine tumor Pancreatic neoplasm Pancreas Pancreatic neuroendocrine neoplasm Pancreatic neuroendocrine tumors