检索结果-南通市图书馆

Journal of Energy Chemistry 2022年第2期31卷 329-351页

作者： Shushay Hagos Gebre Marshet Getaye Sendeku College of Natural and Computational Science Department of ChemistryJigjiga University1020 JigjigaEthiopia CAS center for Excellence in Nanoscience CAS Key Laboratory of Nanosystem and Hierarchical FabricationNational Center for Nanoscience and TechnologyBeijing 100190China

The advancement and growth of nanotechnology lead to realizing new and novel multi-metallic nanostructures with well-defined sizes and morphology,resulting in an improvement in their performance in various catalytic *** trimetallic nanostructured materials are synthesized and designed in different architectures for energy conversion *** as-synthesized trimetallic nanostructures have found unique physiochemical properties due to the synergistic combination of the three different metals in their structures.A vast array of approaches such as hydrothermal,solvothermal,seedgrowth,galvanic replacement reaction,biological,and other methods are employed to synthesize the trimetallic ***,the trimetallic nanostructures showed better performance and durability in the electrocatalytic fuel *** the present review,we provide a comprehensive overview of the recent strategies employed for synthesizing trimetallic nanostructures and their energy-related *** a particular focus on hydrogen evolution,alcohol oxidations,oxygen evolution,and others,we highlight the latest achievements in the field.

关键词： Trimetallic nanoparticle Electrooxidation Electrocatalysis Alloy Energy conversion

A tissue-engineered rostral migratory stream for directed neuronal replacement

在线全文

学校读者我要写书评

暂无评论

Neural Regeneration Research 2018年第8期13卷 1327-1331页

作者： John C.O'Donnell Kritika S.Katiyar Kate V.Panzer D.Kacy Cullen center for Brain Injury & Repair Department of Neurosurgery Perelman School of Medicine University of Pennsylvania center for Neurotrauma Neurodegeneration & Restoration Corporal Michael Crescenz Veterans Affairs Medical Center School of Biomedical Engineering Drexel University Department of Bioengineering School of Engineering and Applied Science University of Pennsylvania

New neurons are integrated into the circuitry of the olfactory bulb throughout the lifespan in the mamma- lian brain--including in humans. These new neurons are born in the subventricular zone and subsequently mature as they are guided over long distances via the rostral migratory stream through mechanisms we are only just beginning to understand. Regeneration after brain injury is very limited, and although some neuroblasts from the rostral migratory stream will leave the path and migrate toward cortical lesion sites, this neuronal replacement is generally not sustained and therefore does not provide enough new neurons to alleviate functional deficits. Using newly discovered microtissue engineering techniques, we have built the first self-contained, implantable constructs that mimic the architecture and function of the rostral migratory stream. This engineered microtissue emulates the dense cord-like bundles of astrocytic somata and processes that are the hallmark anatomical feature of the glial tube. As such, our living microtissue-en- gineered rostral migratory stream can serve as an in vitro test bed for unlocking the secrets of neuroblast migration and maturation, and may potentially serve as a living transplantable construct derived from a patient＇s own cells that can redirect their own neuroblasts into lesion sites for sustained neuronal replace- ment following brain injury or neurodegenerative disease. In this paper, we summarize the development of fabrication methods for this microtissue-engineered rostral migratory stream and provide proof-of-princi- ple evidence that it promotes and directs migration of immature neurons.

关键词： rostral migratory stream glial tube astrocyte neuroblast brain injury neural repair neural regeneration tissue engineering

Study on the relationship between the lower extremities movement and the sciatic nerve tension with the dog

在线全文

学校读者我要写书评

暂无评论

Study on the relationship between the lower extremities move...

Influence of normal to high stroke volume on congestive heart failure development after transcatheter aortic valve implantation:case series

贵州省医学会骨科学分会2014年学术年会

作者： Fei.Yan Fu.You.Wang Gang.Xin.Chen Liu.Yang Jun.Li.Liu Qing.Yu.Liu Rui.He Lin.Chuan.Gu Department of Orthropaedic Third Affiliated hospital of Guiyang Medical University Investigation performed at center for joint Surgery Southwest HospitalThird Military Medical University

关键词：

来源： cnki会议评论

在线全文

cnki会议

学校读者我要写书评

暂无评论

Journal of Geriatric Cardiology 2021年第1期18卷 83-88页

作者： Tomoko Tomioka Tomohiro Ito Ryokichi Takahasi Shuhei Tanaka Department of Cardiology South Miyagi Medical CenterShibataJapan

Aortic stenosis(AS)is the most common valvular disease in the older adults'population,and its prevalence will likely continue to increase with the aging society.[1]Surgical aortic valve replacement(SAVR)for elderly patients is known as a high-risk procedure.[2-4]Transcatheter aortic valve implantation(TAVI)is a reasonable alternative to SAVR for older and inoperable patients with AS,and TAVI significantly improves outcomes in elderly patients with severe AS and serious comorbidities,[5,6]TAVI achieves a 20%relative reduction in mortality compared with SAVR.

关键词： aortic mortality implantation

Study on the relationship between the lower extremities movement and the sciatic nerve tension with the dog

在线全文

学校读者我要写书评

暂无评论

Study on the relationship between the lower extremities move...

Emerging strategies for nerve repair and regeneration in ischemic stroke:neural stem cell therapy

贵州省中西医结合学会第二届骨伤分会第三次学术交流大会

The replacement of high dislocation hip(DDH) is easy to injure the sciatic nerve in ture acetabulum and without the femur shortening *** study is to explore the posture of lower extremities that may avoid the sciatic nerve *** prepared four adult dogs’fresh corpses whose sciatic nerve tension was measured with tension sensor and whose displacement of proximal end of sciatic nerve was measured accompanying the hip and knee *** found that the sciatic nerve tension is 25N～39N(30±7N) at the hip and knee full extension, that the sciatic nerve tension is zero Newton at flexion hip 60°and

关键词：

来源： cnki会议评论

在线全文

cnki会议

学校读者我要写书评

暂无评论

Neural Regeneration Research 2024年第11期19卷 2430-2443页

作者： Siji Wang Qianyan He Yang Qu Wenjing Yin Ruoyu Zhao Xuyutian Wang Yi Yang Zhen-Ni Guo Stroke center Department of Neurologythe First Hospital of Jilin UniversityChangchunJilin ProvinceChina Neuroscience Research center Department of Neurologythe First Hospital of Jilin UniversityChangchunJilin ProvinceChina Department of Breast Surgery General Surgery Centerthe First Hospital of Jilin UniversityChangchunJilin ProvinceChina

Ischemic stroke is a major cause of mortality and disability worldwide,with limited treatment options available in clinical *** emergence of stem cell therapy has provided new hope to the field of stroke treatment via the restoration of brain neuron *** neural stem cells are beneficial not only in cell replacement but also through the bystander *** stem cells regulate multiple physiological responses,including nerve repair,endogenous regeneration,immune function,and blood-brain barrier permeability,through the secretion of bioactive substances,including extracellular vesicles/***,due to the complex microenvironment of ischemic cerebrovascular events and the low survival rate of neural stem cells following transplantation,limitations in the treatment effect remain *** this paper,we provide a detailed summary of the potential mechanisms of neural stem cell therapy for the treatment of ischemic stroke,review current neural stem cell therapeutic strategies and clinical trial results,and summarize the latest advancements in neural stem cell engineering to improve the survival rate of neural stem *** hope that this review could help provide insight into the therapeutic potential of neural stem cells and guide future scientific endeavors on neural stem cells.

关键词： bystander effect cell replacement extracellular vesicles ischemic stroke neural stem cells neural stem cell engineering

Association of serum lipoprotein(a) level with the severity and prognosis of calcific aortic valve stenosis: a Chinese cohort study

在线全文

学校读者我要写书评

暂无评论

Journal of Geriatric Cardiology 2020年第3期17卷 133-140页

作者： Shuo-Lin LIU Rynat Rozi Hui-Wei SHI Ying GAO Yuan-Lin GUO Yi-Da TANG Jian-Jun LI Na-Qiong WU Endocrinology&Cardiometabolic center State Key Laboratory of Cardiovascular DiseaseFuwai HospitalNational Center for Cardiovascular DiseasesChinese Academy of Medical Sciences and Peking Union Medical CollegeBeijingChina

Background There was a causal relationship between elevated lipoprotein(a)[Lp(a)]levels and increased risk of calcific aortic valve stenosis(CAVS)in whites and *** present study aimed to investigate whether Lp(a)levels were associated with aortic stenosis(AS)severity and clinical events in Chinese *** Levels of serum Lp(a)were measured in 652 patients with CAVS,whom all underwent baseline echocardiographic *** clinical endpoint was defined as a composite of aortic valve replacement(AVR)and cardiac *** Patients in the tertile 3 of Lp(a)had a higher percentage of severe AS compared with those in the tertile 1 and 2 of Lp(a)(46.2%vs.33.9%,P=0.005).Moreover,the top tertile of Lp(a)was an independent predictor of severe AS(OR=1.78,95%CI:1.18-2.66,P=0.006).However,there was no significant association between tertile 3 of Lp(a)and clinical events(hazard ratio:0.73;95%CI:0.43-1.24;P=0.239)in the multivariate Cox regression analysis during a mean follow-up time of 3.16±2.74 *** Elevated Lp(a)level was an independent predictor of severe AS by echocardiography in the Chinese population,but was not associated with the increased risk of AVR and cardiac death,suggesting that Lp(a)levels might be helpful in the risk stratification of patients with CAVS.

关键词： Aortic stenosis Calcification Severity Lipoprotein(a) Prognosis

Recuperation of severe tumoral calcinosis in a dialysis patient: A case report

在线全文

学校读者我要写书评

暂无评论

World Journal of Clinical Cases 2019年第23期7卷 4004-4010页

作者： Lukas Westermann Lisa K Isbell Marie K Breitenfeldt Frederic Arnold Elvira Rothele Johanna Schneider Eugen Widmeier Department of Medicine IV Medical CenterUniversity of FreiburgFaculty of MedicineUniversity of FreiburgFreiburg 79106Germany Department of Medicine I Medical CenterUniversity of FreiburgFaculty of MedicineUniversity of FreiburgFreiburg 79106Germany Dialysis center Freiburg Freiburg 79100Germany

BACKGROUND One of the common late sequela in patients with end-stage renal disease(ESRD)is the calcium phosphate disorder leading to chronic hypercalcemia and hyperphosphatemia causing the precipitation of calcium salt in soft *** calcinosis is an extremely rare clinical manifestation of cyst-like soft tissue deposits in different periarticular regions in patients with ESRD and is characterized by extensive calcium salt containing space-consuming painful *** treatment of ESRD patients with tumoral calcinosis manifestation involves an increase in or switching of renal replacement therapy regimes and the adjustment of oral medication with the goal of improved hypercalcemia and *** SUMMARY We describe a 40-year-old woman with ESRD secondary to IgA-nephritis and severe bilateral manifestation of tumoral calcinosis associated with hypercalcemia,hyperphosphatemia and tertiary *** patient was on continuous ambulatory peritoneal dialysis and treatment with vitamin D *** switching her to a daily hemodialysis schedule and adjusting the medical treatment,the patient experienced a significant dissolution of her soft tissue calcifications within a couple of *** remission was achieved 11 mo after the initial *** Reduced patient compliance and subsequent insufficiency of dialysis regime quality contribute to the aggravation of calcium phosphate disorder in a patient with ESRD leading to the manifestation of tumoral ***,the improvement of the treatment strategy and reinforcement of patient compliance enabled complete remission of this rare disease entity.

关键词： End-stage renal disease Renal replacement therapy-dialysis Hyperparathyroidism Hypercalcemia Hyperphosphatemia Tumoral calcinosis Case report

Pilot Study Evaluating the Use of a Commercially Available Oral Nutritional Supplement in the Management of Chronic Kidney Disease in Cats

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Open Journal of Veterinary Medicine 2022年第2期12卷 7-17页

作者： Crystal M. Cooley Jessica M. Quimby Stacie Summers Michael R. Lappin VCA midwest Veterinary Referral and Emergency center Omaha NE USA Department of Veterinary Clinical Sciences The Ohio State University Veterinary Medical Center Columbus OH USA Department of Clinical Sciences Carlson College of Veterinary Internal Medicine Oregon State University Corvallis OR USA Department of Clinical Sciences College of Veterinary Medicine and Biomedical Sciences Colorado State University Fort Collins CO USA

Purpose: To determine if cats with chronic kidney disease (CKD) would willingly consume an oral nutritional supplement formula (NS-CKD) and to assess associated effects on select clinical and biochemical parameters. Methods: Client-owned cats with CKD classified as International Renal Interest Society (IRIS) stage 2 (n = 7), IRIS stage 3 (n = 12), or IRIS stage 4 (1 cat) were classified by the owners as having normal or variable appetites. The cats were offered 30 ml NS-CKD for 14 days concurrently with a meal in a separate bowl and the amount of the NS-CKD consumed daily was recorded. Bodyweight, physical examination, and serum biochemical profiles were assessed on Days 0, 7, and 14. Results: Greater than 50% of the NS-CKD was consumed by 14 of 20 (70%) cats and 12 of 20 cats (60%) consumed >80% of the NS-CKD. The total volume of NS-CKD consumed over the course of the study was statistically greater for the cats classified by owners as having normal appetite (P = 0.046). Increases in body weight were noted for 9 of 14 cats (64.3%) that ingested >50% of the NS-CKD and 1 of 6 cats (16.7%), that ingested ≤ 50% (p = 0.1409) and the group mean % change in body weight was greater in the cats that ingested >50% of the NS-CKD (P = 0.023). The volume of NS-CKD consumed correlated to the % change increases in serum bicarbonate concentration (R = 0.4998;P = 0.02) and was weakly correlated to % change decreases in serum phosphorus concentration (R = 0.0406;P = 0.08). Conclusions: In this pilot study, the NS-CKD was accepted by most cats, no adverse effects were noted, and several findings suggest that the product was associated with ameliorating some metabolic complications which suggest it could be considered in the management of cats with CKD.

关键词： Chronic Kidney Disease Feline Phosphate Binder