检索结果-南通市图书馆

Journal of Wuhan University of Technology(Materials Science) 2024年第3期39卷 613-620页

作者： Saja Algessair nawal Madkhali Department of Physics College of ScienceImam Mohammad Ibn Saud Islamic University(IMSIU)P.O.Box 5701Riyadh 11432Saudi Arabia

The natural Melanin/TiO_(2) was synthesized by the use of ultrasonication under UV *** influence of natural melanin on the structural,optical and thermal properties of TiO_(2) nanoparticles was investigated by using Fourier transform infrared spectroscopy,thermogravimetric analysis and UV-Vis *** was observed that incorporating natural melanin on TiO_(2) nanoparticles(TiO_(2)-Mel)occurred at 2.01 eV with a low value of Urbach energy around 100 meV indicating improvement in the crystalline *** measurement at room temperature showed diamagnetic ***,thermal results showed that TiO_(2)-Mel is stable even at temperatures up to 400℃.According to the results obtained by the thermal stability of melanin with titanium dioxide,it can be a good candidate in many applications such as solar cells and optoelectronics.

关键词： natural melanin/TiO_(2) thermal stability optoelectronic nanostructure UV radiation

维普期刊数据库

Prognostic Factors in Cardiorenal Syndrome Type 1: Retrospective Observational and Analytical Study

在线全文

学校读者我要写书评

暂无评论

World Journal of Cardiovascular Diseases 2024年第7期14卷 435-445页

作者： Mariam el Galiou Amal Zniber Hajar Fitah Naima Ouzeddoun Tarik Bouattar nawal Doghmi Laila Lahlou Loubna Benamar Nephrology-Dialysis-Renal Transplantation Department Ibn Sina University Hospital Mohamed V University Rabat Morocco Department of Cardiology B Ibn Sina University Hospital Mohamed V University Rabat Morocco Laboratory of Biostatistics Clinical Research and Epidemiology Department of Public Health Mohamed V University Rabat Morocco

Introduction: Type 1 cardiorenal syndrome (CRS 1) is characterized by acute impairment of cardiac function leading to acute renal dysfunction. CRS1 is present in 25% of patients admitted for heart failure. The objective of our study is to analyze the epidemiological, clinical, therapeutic profile and the risk and prognostic factors of these patients. Materials and Methods: We identified 120 patients with cardiorenal syndrome (CRS) over a one-year period to determine the prevalence and risk factors for developing CRS 1. We analyzed the clinical, biological, and evolutionary profiles of patients with CRS 1 and determined the risk factors for the occurrence of acute kidney injury (AKI) as well as the mortality factors in these patients. Résultats: The average age of our patients with CRS1 is 58 ± 9 years, with a sex ratio of 1.4. The average eGFR of our patients is 35 ± 6.5 ml/min/1.73m2. Diabetes was found in 17% of our patients and hypertension in 14%. The etiology of cardiac impairment is predominantly acute coronary syndrome (ACS), followed by rhythm disorders. Renally, all our patients have acute kidney injury (AKI), with 86% having functional acute renal failure and 14% having acute tubular necrosis. Therapeutically, 50% of our patients are on diuretics, 42% receive beta-blocker treatment, and RAAS blockers are used in 29% of cases. Renal replacement therapy (RRT) sessions were required in 13.8% of cases. In univariate analysis, male gender, tachyarrhythmia, and hypertension are associated with the early onset of acute kidney injury (AKI). The use of diuretics, anemia, and low left ventricular ejection fraction (LVEF) are linked to a higher risk of developing CRS 1 (p = 0.021, p = 0.037, p = 0.010 respectively). In multivariate analysis, advanced age is significantly associated with increased mortality risk in CRS 1 patients (p = 0.030), while beta-blocker use is considered a protective factor (p = 0.014). Conclusion: Our study identifies several key factors asso

关键词： Acute Kidney Injury Type 1 Cardiorenal Syndrome Acute Heart Failure Diuretics

Cognitive Disorders, Depression and Anxiety in Temporal Lobe Epilepsy: An Overview

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Journal of Biosciences and Medicines 2024年第3期12卷 77-93页

作者： Amina Tani nawal Adali REGNE Research Laboratory Faculty of Medicine and Pharmacy Agadir Morocco ENSA Ibn Zohr University Agadir Morocco Neurology Department University Hospital Agadir Morocco

Partial epilepsies, originating in a specific brain region, affect about 60% of adults with epilepsy. Temporal lobe epilepsy (TLE) is the most prevalent subtype within this category, often necessitating surgical intervention due to its refractoriness to antiepileptic drugs (AEDs). Hippocampal sclerosis, a common underlying pathology, often exacerbates the severity by introducing cognitive and emotional challenges. This review delves deeper into the cognitive profile of TLE, along with the risk factors for cognitive disorders, depression, and anxiety in this population.

关键词： Temporal Lobe Epilepsy Cognitive Disorders Anxiety Depression

Global multifaceted biodiversity patterns,centers,and conservation needs in angiosperms

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Science China(Life Sciences) 2024年第4期67卷 817-828页

作者： Ao Luo Yaoqi Li nawal Shrestha Xiaoting Xu Xiangyan Su Yichao Li Tong Lyu Kilara Waris Zhiyao Tang Xiaojuan Liu Luxiang Lin Yongsheng Chen Kuiling Zu Wenqi Song Shijia Peng Niklaus E.Zimmermann Loïc Pellissier Zhiheng Wang Institute of Ecology and Key Laboratory for Earth Surface Processes of the Ministry of Education College of Urban and Environmental SciencesPeking UniversityBeijing 100871China Department of Health and Environmental Sciences Xi’an Jiaotong-Liverpool UniversitySuzhou 215123China State Key Laboratory of Grassland Agro-Ecosystems College of EcologyLanzhou UniversityLanzhou 730000China Key Laboratory of Bio-Resource and Eco-Environment of Ministry of Education College of Life SciencesSichuan UniversityChengdu 610065China Land Consolidation and Rehabilitation Center Ministry of Natural ResourcesBeijing 100035China State Key Laboratory of Vegetation and Environmental Change Institute of BotanyChinese Academy of SciencesBeijing 100093China CAS Key Laboratory of Tropical Forest Ecology Xishuangbanna Tropical Botanical GardenChinese Academy of SciencesKunming 650201China Swiss Federal Research Institute WSL Birmensdorf 8903Switzerland Department of Environmental Systems Science ETH ZürichZürich 8092Switzerland

The Convention on Biological Diversity seeks to conserve at least 30%of global land and water areas by 2030,which is a challenge but also an opportunity to better preserve biodiversity,including flowering plants(angiosperms).Herein,we compiled a large database on distributions of over 300,000 angiosperm species and the key functional traits of 67,024 *** this database,we constructed biodiversity-environment models to predict global patterns of taxonomic,phylogenetic,and functional diversity in terrestrial angiosperms and provide a comprehensive mapping of the three diversity *** further evaluated the current protection status of the biodiversity centers of these diversity *** results showed that geographical patterns of the three facets of plant diversity exhibited substantial spatial mismatches and nonoverlapping conservation *** centers of functional diversity,particularly of herbaceous species,were primarily distributed in temperate regions and under weaker protection compared with other biodiversity centers of taxonomic and phylogenetic *** global assessment of multifaceted biodiversity patterns and centers highlights the insufficiency and unbalanced conservation among the three diversity facets and the two growth forms(woody ***),thus providing directions for guiding the future conservation of global plant diversity.

关键词： angiosperms species richness phylogenetic diversity functional diversity plant traits woody species herbaceous species

维普期刊数据库

Care4U: Integrated healthcare systems based on blockchain

在线全文

学校读者我要写书评

暂无评论

Blockchain(Research and Applications) 2023年第4期4卷 2-13页

作者： Randa Kamal Ezz el-Din Hemdan nawal el-fishwa. Department of Computer Science and Engineering Faculty of Electronic EngineeringMenoufia UniversityEgypt

During the COVID-19 crisis, the need to stay at home has increased dramatically. In addition, the number of sickpeople, especially elderly persons, has increased exponentially. In such a scenario, home monitoring of patientscan ensure remote healthcare at home using advanced technologies such as the Internet of Medical Things (IoMT).The IoMT can monitor and transmit sensitive health data;however, it may be vulnerable to various attacks. In thispaper, an efficient healthcare security system is proposed for IoMT applications. In the proposed system, themedical sensors can transmit sensed encrypted health data via a mobile application to the doctor for ***, three consortium blockchains are constructed for load balancing of transactions and reducing transactionlatency. They store the credentials of system entities, doctors' prescriptions and recommendations according to thedata transmitted via mobile applications, and the medical treatment process. Besides, cancelable biometrics areused for providing authentication and increasing the security of the proposed medical system. The investigationalresults show that the proposed system outperforms existing work where the proposed model consumed lessprocessing time by values of 18%, 22%, and 40%, and less energy for processing a 200 KB file by values of 9%,13%, and 17%. Finally, the proposed model consumed less memory usage by values of 7%, 7%, and 18.75%. Fromthese results, it is clear that the proposed system gives a very reliable and secure performance for efficientlysecuring medical applications.

关键词： Healthcare Blockchain Cyber security Internet of things Internet of Medical Things Cancelable biometrics

Potential effect of Silybum marianum L. and Cistus ladaniferus *** on urine volume, creatinine clearance and renal function

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Asian Pacific Journal of Tropical Medicine 2018年第6期11卷 393-398页

作者： nawal el Menyiy Noori Al-Waili Redouan el-Haskoury Meryem Bakour Soumia Zizi Thia Al-Waili Badiaa Lyoussi Physiology-Pharmacology and Environmental Health Laboratory Faculty of Sciences Dhar MahrazUniversity Sidi Mohamed Ben AbdallahFez 30000Morocco New York Medical Care for Nephrology Richmond HillNew York 11418USA

Objective:To investigate the diuretic and renal effects of Silybum marianum *** Cistus ladaniferus *** normal ***:Four groups of rats were used in each *** first group received water,the second group received Cistus ladaniferus ***(100 mg/kg ***),the third group received Silybum marianum ***(100 mg/kg ***),and the fourth group received furosemide(10 mg/kg ***).Variables including urine volume,plasma and urine sodium,potassium and creatinine,and creatinine clearance were *** experiments were conducted.A single dose of each intervention was used and the variables were measured during 24 h,and the interventions were given daily for a total of 8 d and the variables were measured during various ***:The single dose of each plant extract increased urine volume at all-time intervals and increased urine sodium and potassium excretion without affecting plasma sodium and potassium(Pelectrolytes(P<0.05),while furosemide caused *** plant extracts significantly increased creatinine clearance(P<0.05).Conclusions:Silybum marianum *** Cistus ladaniferus L Increase creatinine clearance and have a significant diuretic effect without affecting serum *** marianum *** more potent than furosemide or Cistus ladaniferus L.

关键词： Silybum marianum L. Cistus ladaniferus L. Diuresis Urine volume Sodium Potassium Creatinine clearance

Security Analysis for SCKHA Algorithm:Stream Cipher Algorithm Based on Key Hashing Technique

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Chinese Journal of electronics 2022年 1-16页

作者： Souror Samia el-Fishawy nawal Badawy Mohammed Department of Computer Science and Engineering Faculty of Electronic Engineering Menoufia University

The strength of any cryptographic algorithm is mostly based on the difficulty of its encryption key. However, the larger size of the shared key the more computational operations and processing time for cryptographic algorithms. To avoid increasing the key size and keep its secrecy, we must hide it. The authors proposed a stream cipher algorithm that can hide the symmetric key[1]through hashing and splitting techniques. This paper aims to measure security analysis and performance assessment for this algorithm. This algorithm is compared with three of the commonly used stream cipher algorithms: RC4, Rabbit, and Salsa20 in terms of execution time and throughput. This comparison has been conducted with different data types as audio, image, text,docs, and pdf. Experiments proved the superiority of SCKHA algorithm over both Salsa20 and Rabbit algorithms. Also, results proved the difficulty to recover the secret key for SCKHA algorithm. Although RC4 has a lower encryption time than SCKHA, it is not recommended for use because of its vulnerabilities. Security factors that affect the performance as avalanche effect, correlation analysis, histogram analysis, and Shannon information entropy are highlighted. Also, the ciphertext format of the algorithm gives it the ability to search over encrypted data.

关键词：

Comparison of hypotensive,diuretic and renal effects between cladodes of Opuntia ficus-indica and furosemide

在线全文

同方期刊数据库

学校读者我要写书评

暂无评论

Asian Pacific Journal of Tropical Medicine 2017年第9期10卷 900-906页

作者： Meryem Bakour Noori Al-Waili Redouan el-Haskoury nawal el-Menyiy Thia Al-Waili Ali AL-Waili Badiaa Lyoussi Physiology-Pharmacology and Environmental Health Laboratory Faculty of Sciences Dhar MahrazUniversity Sidi Mohamed Ben AbdellahFezMorocco New York Medical Care for Nephrology Richmond HillNew York CityNYUSA

Objective: To investigate the diuretic, hypotensive and renal effect of Opuntia ficusindica in two different species in oral and intravenous ***: Diuretic activity was evaluated in rats with the plant cladode gel and aqueous extract administrated orally, and was evaluated in rabbits with plant extract administered intravenously. Single and repeated doses of cladode gel or aqueous extract of cladode were tested. Urine volume and blood and urine creatinine, sodium and potassium were measured, and creatinine clearance was calculated. The hypotensive effect of lyophilized extract of cladode was evaluated in rabbits. Two polyethylene PE50 catheters were used:one in the jugular vein for the infusion of the plant extract and the other in the carotid for the evaluation of the arterial ***: The cladode gel or aqueous extract increased urine volume, creatinine clearance and urinary excretion of sodium and potassium without significant effect on serum creatinine or blood urea. Furosemide, gel and aqueous extract of cladode insignificantly lowered plasma potassium in rats. Intravenous administration of the lyophilized extract caused a significant decrease in mean arterial pressure in rabbits with a significant increase in urine volume and urine sodium and potassium; the effect was dose *** administration of lyophilized extract did not affect plasma sodium or ***: Gel and aqueous extract of Opuntia ficus-indica cladode have a significant diuretic effect on rats, and the lyophilized extract has a diuretic and hypotensive effect on normotensive rabbits without deterioration in renal function test. Additional studies on active ingredients are essential to pave the way for clinical studies on diuretic and hypotensive effect of the plant.

关键词： Opuntia ficus-indica Sodium Potassium Blood pressure Creatinine Kidney

Chemical analysis and antioxidant content of various propolis samples collected from different regions and their impact on antimicrobial activities

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Asian Pacific Journal of Tropical Medicine 2018年第7期11卷 436-442页

作者： Soumaya Touzani Noori Al-Waili nawal el Menyiy Bratko Filipic Adriana Pereyra Ilham el Arabi Wail Al-Waili Badiaa Lyoussi Laboratory of Physiology Pharmacology & Environmental Health Faculty of Science University Sidi Mohamed Ben Abdellah New York Medical Care for Nephrology Institute for Microbiology and Immunology Medical Faculty of Ljubljana University of Ljubljana

Objective: To assess the antioxidant content, antimicrobial and antioxidant activities of various propolis samples. Methods: Seven propolis samples were collected from different locations in Morocco, which are characterized by different plant predominant vegetations. The resin, wax and balsam of hydroalcoholic extract of propolis content were identified, and the antioxidant content was analyzed with the use of HPLC and colorimetric methods. The antioxidant activity was assessed by DPPH, ABTS.^+ and ferric reducing power assays. The antimicrobial activity was assessed against bacterial species, including methicillin resistant Staphylococcus aureus and Candida albicans, and expressed as the minimal inhibitory concentration. Results: The propolis samples showed significant variations in the chemical composition and in the antioxidant or antimicrobial activities even when the samples were collected from the same location. Propolis with high resin and low wax content had high level of antioxidant compounds, and strong antioxidant and antimicrobial activities. Gram-positive bacteria, especially, methicillin resistant Staphylococcus aureus were more sensitive to all propolis samples than Gram-negative bacteria and Candida albicans. Conclusions: The chemical composition and the antioxidant and antimicrobial activities of various propolis samples are different and rely on the geographic and plant origin of propolis collection. Propolis samples with low wax and high resin content might be more suitable to be used in future preclinical or clinical investigations.

关键词： Propolis Antimicrobial Antioxidant Phenol Candida albicans Methicillin resistant Staphylococcus aureus

Folded novel accurate analytical and semi-analytical solutions of a generalized Calogero–Bogoyavlenskii–Schiff equation

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Communications in Theoretical Physics 2021年第9期73卷 26-36页

作者： Mostafa M A Khater S K elagan M A el-Shorbagy S H Alfalqi J F Alzaidi nawal A Alshehri Department of Mathematics Faculty of ScienceJiangsu University212013ZhenjiangChina Department of Mathematics Obour High Institute For Engineering and Technology11828CairoEgypt Department of Mathematics Faculty of ScienceTaif University P.O.Box 11099Taif 21944Saudi Arabia Department of Mathematics College of Science and Humanities in Al-KharjPrince Sattam bin Abdulaziz UniversityAl-Kharj 11942Saudi Arabia Department of Basic Engineering Science Faculty of EngineeringMenoufia UniversityShebin El-Kom 32511Egypt Department of Mathematics Faculty of Science and ArtsMahayil Asir King Khalid UniversityAbhaSaudi Arabia

This paper studies the analytical and semi-analytic solutions of the generalized Calogero–Bogoyavlenskii–Schiff(CBS)*** model describes the(2+1)–dimensional interaction between Riemann-wave propagation along the y-axis and the x-axis *** extended simplest equation(ESE)method is applied to the model,and a variety of novel solitarywave solutions is *** solitary-wave solutions prove the dynamic behavior of soliton waves in *** accuracy of the obtained solution is verified using a variational iteration(VI)semi-analytical *** analysis and the match between the constructed analytical solution and the semi-analytical solution are sketched using various diagrams to show the accuracy of the solution we *** adopted scheme’s performance shows the effectiveness of the method and its ability to be applied to various nonlinear evolution equations.

关键词： generalized Calogero-Bogoyavlenskii-Schiff equation accurate analytical semianalytical solutions

维普期刊数据库