检索结果-南通市图书馆

Hematological picture of pediatric Sudanese patients with visceral leishmaniasis and prediction of leishmania donovani parasite load

引用

World Journal of Clinical Cases 2024年第30期12卷 6374-6382页

作者： Zeinab Ibrahim Ahmed Elnoor Omaima Abdelmajeed Alamin Mustafa Thuraya Gasim Shima Algam Mohamed musa Abdelrahman Hamza Abdelmoneim Islamia Ibrahim Ahmed Omer Hiba Awadelkareem Osman Fadl Department of Pathology Faculty of MedicineOmdurman Ahilia UniversityOmdurmanKhartoumSudan mohammed Alamin Hamid Pediatric Hospital Omdurman KhartoumSudan Department of Hematology and Blood Transfusion Medicine Federal Ministry of HealthKhartoumSudan Department of Pediatrics Faculty of MedicineOmdurman Islamic UniversityOmdurmanKhartoumSudan Tropical Diseases Teaching Hospital OmdurmanKhartoumSudan Faculty of Medicine Al-Neelain UniversityKhartoumSudan Faculty of Medicine Omdurman Islamic UniversityOmdurmanKhartoumSudan Department of Pediatrics Faculty of MedicineUniversity of Science and TechnologyKhartoumSudan Department of Hematology Faculty of Medical Laboratory SciencesAl-Neelain UniversityKhartoumSudan

BACKGROUND Visceral leishmaniasis(VL)is a systemic protozoan infection caused by Leishmania donovani(***)and transmitted by sand flies,causing macrophage invasion in the liver,spleen,and bone *** of VL is currently based on clinical signs,symptoms,and specific in-vitro markers and bone marrow ***,VL's specific hematological and bone marrow manifestation in Sudanese pediatric patients is not well *** To examine the blood and bone marrow characteristics in pediatric patients from Sudan who have *** This is a retrospective hospital-based study with a sample of 107 consecutive Sudanese pediatric *** data focused on hematological and bone marrow *** included only the completed records of the pediatric patients with VL in the Tropical Disease Teaching Hospital in Khartoum,Sudan from the period of 2016 to *** The majority of pediatric patients included in this study are below 5-years-old(n=59,55.2%).Moreover,anemia,thrombocytopenia,and leukopenia were among the prevalent characteristics in the population under *** further analyze the data,we developed a machine learning model using boosted forest algorithms to predict *** parasites load,with a mean accuracy of 0.88 for the training dataset and an accuracy of 0.46,0.50,and 0.74 for mild,moderate,and severe *** parasite load in the validation *** This study shows that the most common bone marrow change among Sudanese VL children was increased chronic inflammatory cells(n=88,82.2%)with present macrophage hemophagocytes(n=103,96.3%).While anemia and thrombocytopenia were the most common hematological *** results will hopefully lead to an early diagnosis and hence better management for Sudanese pediatric patients with suspected VL.

关键词： Machine learning Bone marrow Hematological changes Tropical diseases Leishmania donovani Visceral leishmaniasis

来源：

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

A New Generative Mathematical Model for Coverless Steganography System Based on Image Generation

引用

Computers, Materials & Continua 2023年第3期74卷 5087-5103页

作者： Al-hussien Seddik mohammed Salah Gamal Behery Ahmed El-harby Ahmed Ismail Ebada Sokea Teng Yunyoung Nam Mohamed Abouhawwash Department of Computer Science Faculty of ScienceMinia UniversityMiniaEgypt Department of Computer Science Faculty of Computers and Artificial IntelligenceDamietta UniversityNew DamiettaEgypt Department of ICT Convergence Soonchunhyang UniversityAsan31538Korea Department of Mathematics Faculty of ScienceMansoura UniversityMansoura35516Egypt Department of Computational Mathematics Scienceand Engineering(CMSE)Michigan State UniversityEast Lansing48824MIUSA

The ability of any steganography system to correctly retrieve the secret message is the primary criterion for measuring its ***,researchers have tried to generate a new natural image driven from only the secret message bits rather than using a cover to embed the secret message within it;this is called the stego *** paper proposes a new secured coverless steganography system using a generative mathematical model based on semi Quick Response(QR)code and maze game image *** system consists of two *** first component contains two processes,encryption process,and hiding *** encryption process encrypts secret message bits in the form of a semi-QR code image whereas the hiding process conceals the pregenerated semi-QR code in the generated maze game *** the other hand,the second component contains two processes,extraction and decryption,which are responsible for extracting the semi-QR code from the maze game image and then retrieving the original secret message from the extracted semi-QR code image,*** results were obtained using the bit error rate(BER)*** results confirmed that the system achieved high hiding capacity,good performance,and a high level of robustness against attackers compared with other coverless steganography methods.

关键词： Coverless steganography data hiding information security QR code maze game

来源：

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

Vital Parameters Assessments of Starvation Tolerance of in vitro Populus alba Culture

引用

Phyton-International Journal of Experimental Botany 2022年第4期91卷 889-902页

作者： Mohamed Fathy Ahmed Eman Zakaria Ahmed Salman Aloufi mohammed Alqurashi Amal Alyamani Eman Fayad Eman Tawfik hussien Horticulture Department Faculty of AgricultureAin Shams UniversityCairo11566Egypt Botany and Microbiology Department Faculty of ScienceHelwan UniversityCairo11795Egypt Department of Biotechnology Faculty of SciencesTaif UniversityTaif21944Saudi Arabia

Populus alba is a large woody deciduous *** plant has been introduced to shooting,then multiplication of rooting on Murashige and Skoog(MS)*** work was designed to estimate the effect of two factors(low levels of 1-Naphthaleneacetic acid NAA and sucrose)on *** response resulting in 6 treatments compared to the control,with twelve measured *** was a significant difference in some measurements in morphology,like plantlets fresh-weight,shoot-,root-length,and leaf *** the physiological measurements,there were significant differences in all the measured *** low concentrations of sucrose and media composition/power(MS grams/L)led to starvation in plants;however,these conditions led to enhancement in some morphological and physiological parameters to overcome the starvation effect,compared to the *** RAPD-PCR molecular marker(four decamers)was used to evaluate the new individuals’genetic variation(instability),resulting in a total polymorphism percentage of 50.83%.It was formerly known that the plantlets were identical to each other and to the mother *** this study,however,the use of distinct media power,hormonal and sucrose levels resulted in molecular variation reflected in ***’s morphological and physiological responses.

关键词： Genetic stability Populus alba RAPD-PCR somaclonal variations starvation

来源：

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

Fabrication, characterization and response surface method optimization for quantum efficiency of fluorescent nitrogen-doped carbon dots obtained from carboxymethylcellulose of oil palms empty fruit bunch

引用

Chinese Journal of Chemical Engineering 2020年第2期28卷 584-592页

作者： mohammed Abdullah Issa Zurina Zainal Abidin Shafreeza Sobri Suraya Abdul-Rashid Mohd Adzir Mahdi Nor Azowa Ibrahim musa Y.Pudza Department of Chemical and Environmental Engineering Faculty of EngineeringUniversiti Putra Malaysia43400 UPM SerdangSelangorMalaysia Department of Computer&Communications Systems Engineering Faculty of EngineeringUniversiti Putra Malaysia43400 UPM SerdangSelangorMalaysia Department of Chemistry Faculty of ScienceUniversiti Putra Malaysia43400 SerdangSelangorMalaysia

Bio based nitrogen doped carbon dots(N-CDs)were obtained from empty fruit bunch carboxymethylcellulose and ethylenediamine(EDA)through one-pot hydrothermal carbonization *** optimum as-formed NCDs were thoroughly characterized via Transmission electron microscopy(TEM),high-resolution TEM(HRTEM),Fourier transform infrared(FTIR),X-ray photoelectron spectra(XPS),UV–vis spectra(UV–Vis)and Fluorescence spectra(PL).Response surface methodology was statistically used to assess three independent variables that have major influence on the fluorescence quantum yield(QY),including temperature(230–270℃),time(2–6 h)and EDA mass(10%–23.3%).Based on analysis of variance(ANOVA)results,synthesis temperature was found to be the most influential factor on the QY,followed by time and EDA *** temperature,long synthesis time and high amount of EDA were satisfactorily enough for efficient carbonization conversion rate and obtaining highest QY of *** obtained quadratic model(R^2=0.9991)shows a good correlation between the experimental data and predicted *** optimum synthetic parameters are of 270℃temperature,6 h reaction time and 23.3%of EDA *** optimized as-made N-CDs exhibited blue photoluminescence with both excitation dependent/independent phenomena and high nitrogen *** maximum emission intensity was 426 nm at a maximum excitation wavelength of 320 nm,with a QY of up to 22.9%.XPS and FTIR data confirmed the existence of polar containing groups,such as carbonyl,carboxyl,hydroxyl and amino groups over the surface of N-CDs whereas nitrogen species in the form of(pyridinic and graphitic-N)were introduced in the aromatic carbon domains,which imparts the hydrophilic and photostability of *** into account the low-cost and sustainable production of N-CDs,this method considered a feasible route for converting low quality waste into value-added nanomaterials and utilizing for different functionalization processes and analytical applications.

关键词： Carbon dots Fluorescence Response surface methodology Optimization Nitrogen doped

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

Phytochemical screening and anticonvulsant studies of ethyl acetate fraction of Globimetula braunii on laboratory animals

引用

Asian Pacific Journal of Tropical Biomedicine 2014年第4期4卷 285-289页

作者： musa Mumammad Aliyu Abdullahi Isma'il musa Muhammad Ja'afar Kanial Magaji Garba mohammed Department of Pharmaceutical and Medicinal Chemistry Ahmadu Bello University Department of Pharmaceutical and Medicinal Chemistry Usmanu Danfodio University Chemistry Advance Laboratory Sheda Science and Technology Complex Department of Pharmacology and Therapeutics Ahmadu Bello University

Objective:To investigate the phytochemical properties and the anticonvulsant potential of the ethyl acetate soluble fraction of ethanol leaf extract of Globimetida braunii,a plant used in ethnomedicine for the treatment of ***:The phytochemical screening was carried out using standard protocol while the anticonvulsant activity was studied using maximal electroshock test in chicks,pentylenetetrazole and 4-aminopyridine—induced seizures in ***:The preliminary phytochemical screening carried out on the crude ethanol extract revealed the presence of saponins,carbohydrates,flavonoids,tannins,anthraquinones and ***,tannins,flavonoids and steroids/terpenes were found to be present in the ethyl acetate fraction,In the pharmacological screening,150 mg/kg of the fraction protected 83.33%of animals against pentylenetetrazole-induced seizure in mice whereas sodium valproate a standard anti-epileptic drug offered 100%*** the 4-aminopyridine-induced seizure model,the fraction produced a significant(P<0.05)increase in the mean onset of seizure in unprotected *** fraction did not exhibit a significant activity against maximal electroshock *** median lethal dose of the fraction was found to be 1261.91 mg/***:These results suggest that the ethyl acetate fraction of Globimetula braunii leaves extract possesses psychoactive compound that may be useful in the management of petit mal epilepsy and lend credence to the ethnomedical use of the plant in the management of epilepsy.

关键词： Epilepsy Globimetula braunii Seizure Medicinal Pentylenetetrazole

来源：

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

Sonographic gallbladder wall thickness measurement and the prediction of esophageal varices among cirrhotics

引用

World Journal of Hepatology 2023年第2期15卷 216-224页

作者： Mohamed H Emara Mariam Zaghloul Ibrahim F Amer Aya M Mahros mohammed hussien Ahmed Mahmoud A Elkerdawy Eslam Elshenawy Abdelrahman M Ahmed Rasheda Tarik I Zaher Mona Talaat Haseeb Emad hassan Emara hassan Elbatae Department of Hepatology Gastroenterology and Infectious DiseasesKafrelsheikh UniversityKafr-Elshikh 33516Egypt Department of Internal Medicine Gastroenterology UnitSecurity Forces HospitalRiyadh 11481Saudi Arabia Tropical Medicine Zagazig UniversityZagazig 44519Egypt Department of Diagnostic and Interventional Radiology Kafrelsheikh UniversityKafr-Elshikh 33516Egypt

Acute variceal bleeding in patients with liver cirrhosis and portal hypertension(PHT) is the most serious emergency complication among those patients and could have catastrophic outcomes if not timely managed. Early screening by esophago-gastro-duodenoscopy(EGD) for the presence of esophageal varices(EVs) is currently recommended by the practice guidelines for all cirrhotic patients. Meanwhile, EGD is not readily accepted or preferred by many patients. The literature is rich in studies to investigate and validate non-invasive markers of EVs prediction aiming at reducing the unneeded endoscopic procedures. Gallbladder(GB) wall thickness(GBWT) measurement has been found promising in many published research articles. We aim to highlight the validity of sonographic GBWT measurement in the prediction of EVs based on the available evidence. We searched databases including Cochrane library, Pub Med, Web of Science and many others for relevant articles. GBWT is associated with the presence of EVs in cirrhotic patients with PHT of different etiologies. The cut-off of GBWT that can predict the presence of EVs varied in the literature and ranges from 3.1 mm to 4.35 mm with variable sensitivities of 46%-90.9% and lower cutoffs in viral cirrhosis compared to non-viral, however GBWT > 4 mm in many studies is associated with acceptable sensitivity up to 90%. Furthermore, a relation was also noticed with the degree of varices and portal hypertensive *** cirrhotics, GBWT > 3.5 mm predicts the presence of advanced(grade Ⅲ-Ⅳ) EVs with a sensitivity of 45%, the sensitivity increased to 92% when a cut-off ≥ 3.95 mm was used in another cohort. Analysis of these results should carefully be revised in the context of ascites, hypoalbuminemia and other intrinsic GB diseases among cirrhotic patients. The sensitivity for prediction of EVs improved upon combining GBWT measurement with other non-invasive predictors, e.g., platelets/GBWT.

关键词： Sonographic Gallbladder wall thickness Prediction Esophageal varices Portal hypertension Esophago-gastro-duodenoscopy

来源：

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

Effects of melatonin on changes in cognitive performances and brain malondialdehyde concentration induced by sub-chronic coadministration of chlorpyrifos and cypermethrin in male Wister rats

引用

Asian Pacific Journal of Tropical Biomedicine 2014年第4期4卷 318-323页

作者： Idris Sherifat Banke Ambali Suleiman Folorunsho Bisalla mohammed Suleiman mohammed musa Onukak Charles Ayo Joseph Olusegun Department of Pharmacology and Toxicology.Faculty of Veterinary Medicine Usmanu Danfodiyo University Sokoto Department of Pharmacology and Toxicology Faculty of Veterinary MedicineUniversity of Ilorin Department of Pathology Faculty of Veterinary MedicineAhmadu Bello University Department of Pharmacology and Toxicology Faculty of Veterinary Medicine Ahmadu Bello University Department of Pharmacology and Toxicology Faculty of Veterinary MedicineAhmadu Bello University

Objective:To evaluate the ameliorative effect of melatonin on sub-chronic chlorpyrifos(CPF)and cypermethrin(CYP)-evoked cognitive changes in male Wistar ***:Fifty adult male Wistar rats,divided into five groups of ten rats each,were used for the ***ⅠandⅡwere given distilled water and soya oil(2 ml/kg)***Ⅲwas administered with melatonin at 0.5 mg/kg ***Ⅳwas administered with CPF[7.96 mg/kg(1/10th LD_(50))]and CYP[29.6 mg/kg(1/10th LD_(50))].and Group V was administered with CPF[7.96 mg/kg(1/10th LD_(50)]and CYP[29.6 mg/kg(1/10th LD_(50)]30 min after melatonin(0.5 mg/kg).The regimens were administered by gavage once daily for 12 ***,cognitive performances were determined and the brain was evaluated for malonaldehyde ***:CPF and CYP induced cognitive deficits and increased brain malonaldehyde concentration,which were all ameliorated by ***:Cognitive deficits elicited by CPF and CYP was mitigated by melatonin due to its antioxidant property.

关键词： Chlorpyrifos Cypermethrin Cognition Brain malondialdehyde Melatonin

来源：

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

Mathematical Model of the Dynamics of Rumor Propagation

引用

Journal of Applied Mathematics and Physics 2019年第6期7卷 1289-1303页

作者： Samuel musa mohammed Fori Modibbo Adama University of Technology Yola Yola Adamawa State Nigeria Department of Mathematics College of Education Waka Biu Waka-Biu Borno State Nigeria

In this study, we proposed a deterministic mathematical model that attempts to explain the propagation of a rumor using epidemiological models approach. The population is divided into four classes which consist of ignorant individuals, I(t), spreaders targeting community through media, M(t), spreaders targeting community through verbal communication, G(t) and stiflers, R(t). We explored existence of the equilibria and analyzed its stability. It was established that rumour-free equilibrium E0 is locally asymptotically stable if R01 leads to new rumor spreading in the population. Numerical simulations of the dynamic model are carried out on the system to confirm the analytical results. We see that the dynamics of rumor spreading show similar behavior to that found in the dynamics of infectious diseases except that the spread depends on the classes of spreader.

关键词： Rumor Propagation Rumor-Free Equilibrium Rumor-Endemic Equilibrium

来源：

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

Coverless Image Steganography System Based on Maze Game Generation

引用

Intelligent Automation & Soft Computing 2023年第11期38卷 125-138页

作者： Al hussien Seddik Saad mohammed S.Reda GamalM.Behery Ahmed A.El-harby mohammed Baz Mohamed Abouhawwash Ahmed Ismail Ebada Department of computer science Faculty of ScienceMinia UniversityShalabyMiniaEgypt Department of computer science Faculty of Computers and Artificial IntelligenceDamietta UniversityNew DamiettaDamiettaEgypt Department of Computer Engineering College of Computer and Information TechnologyTaif UniversityP.O.Box 11099Taif21994Saudi Arabia Department of Mathematics Faculty of ScienceMansoura UniversityMansoura35516Egypt Department of Computational Mathematics Scienceand Engineering(CMSE)College of EngineeringMichigan State UniversityEast LansingMI48824USA Department of Information Systems Faculty of Computers and Artificial IntelligenceDamietta UniversityNew DamiettaDamiettaEgypt

The trend of digital information transformation has become a topic of *** data are threatening;thus,protecting such data from attackers is considered an essential ***,a new methodology for data concealing has been suggested by researchers called coverless *** steganography can be accomplished either by building an image database to match its image subblocks with the secret message to obtain the stego image or by generating an *** paper proposes a coverless image steganography system based on pure image generation using secret message bits with a capacity higher than the other traditional *** system uses the secret message to generate the stego image in the form of one of the Intelligence Quotient(IQ)games,the ***,a full grid is generated with several specific rows and columns determined from the number of bits of the secret ***,these bits are fed to the full grid to form the maze game stego ***,the generated maze game stego image is sent to the *** experimental results,using the Bit Error Rate(BER),were conducted,and confirmed the strength of this system represented by a high capacity,perfect performance,robustness,and stronger hiding system compared with existing coverless steganography systems.

关键词： Coverless data hiding digital image steganography intelligence quotient games maze game

来源：

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

Effect of lyophilized aqueous leaf extract of Aquilaria subintegra on aphrodisiacproperties in mice

引用

Asian pacific Journal of Reproduction 2019年第4期8卷 167-173页

作者： Nur Hidayat Che musa Haniza Hanim Mohd Zain mohammed Muayad TA Husni Ibrahim Biology Department Faculty of Science and MathematicsSultan Idris Education University35900 Tanjong MalimPerak Darul RidzuanMalaysia Environmental Research Centre University of TechnologyBaghdadIraq

Objective: To investigate the effects of Aquilaria subintegra leaf aqueous extracts on the aphrodisiac properties including sexual behaviour, testosterone level, percentage of pregnancy, number of offspring and male to female ratio of offspring in ICR mice. Methods: In this experiment, each male cohabitated with one female in a polysulfone cage. 30 ICR male mice were divided into 6 groups that received normal saline (the control group), 50 mg/kg, 100 mg/kg, 200 mg/kg, 500 mg/kg, and 1000 mg/kg body weight of Aquilaria subintegra leaf aqueous extracts orally for 21 days consecutively. Sexual behavior, percentage of pregnancy, number of offspring and male to female ratio of offspring in ICR mice were measured according to the established methods. Testosterone level was measured by using enzyme-linked immunosorbent assay. Results: Mice that received Aquilaria subintegra leaf aqueous extracts at 50 mg/kg body weight (day 0) had significantly higher mount frequency as compared to the control group;groups treated with 100, 500, 1000 mg/kg body weight extracts produced a greater number of offsprings when compared to the control group. All aphrodisiac parameters were similar between the treatment groups and the control group, indicating that Aquilaria subintegra leaf aqueous extract did not significantly alter the aphrodisiac parameters. Conclusions: Aquilaria subintegra leaf aqueous extracts have no effect on the aphrodisiac properties, but could increase the breeding rate in mice.

关键词： Aquilaria subintegra Aphrodisiac Sexual behaviour Testosterone Offspring

来源：

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

欢迎您,

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

请选择保存的检索档案：

请选择收藏分类：

通借通还

欢迎您,

建议与咨询 留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

请选择保存的检索档案： 新增检索档案 确定 取消

请选择收藏分类： 新增自定义分类 确定 取消

通借通还

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

请选择保存的检索档案：

请选择收藏分类：