Fei Zhou, Yu Zhou^*, Xuemin Ye

FDMP-Fluid Dynamics & Materials Processing, Vol.18, No.4, pp. 1025-1037, 2022, DOI:10.32604/fdmp.2022.020196

Abstract Taking a two-stage variable-pitch axial fan as the research object, five schemes, including a single counter-flow rib layout grooved tip, are numerically simulated using the fluent software. The results indicate that, compared with the original blade tip, the total pressure rise and efficiency of the four proposed schemes have been improved to various degrees, with Scheme 4 (groove tip with double counterflow ribs) displaying the best performances. The total pressure and efficiency are increased by 113.44 Pa and 0.955%, respectively. The blade tip leakage flow is reduced to varying degrees under different schemes, according to the following order: Scheme 1, Scheme… More >

SANTOSH KUMAR KARN¹, ADITYA UPADHYAY², AWANISH KUMAR^2,*

BIOCELL, Vol.46, No.7, pp. 1771-1777, 2022, DOI:10.32604/biocell.2022.018845

Abstract Chemicals are comprehensively used worldwide to control herbs, weeds, pests, and other competing agents with various growing crops. The consumption of crops grown with these chemicals (even in small quantities) can upshot into accumulation in the human body. People can accidentally inhale these hazardous chemicals if they are in an area where they were applied. These chemicals can be ingested in a human with contaminated food and drinks. Ultimately it causes various adverse effects (chronic toxicity, teratogenic, mutagenic, carcinogenic effect, reproductive, and organ toxicity) on human health. Among the pool of these chemicals used as pesticides in the environment, exposure… More >

Jesús Hamilton Ortiz¹, Carlos Andrés Tavera Romero^2,*, Bazil Taha Ahmed³, Osamah Ibrahim Khalaf⁴

CMC-Computers, Materials & Continua, Vol.72, No.1, pp. 1877-1899, 2022, DOI:10.32604/cmc.2022.023796

Abstract This article shows the quality of services in a wireless swarm of drones that form an ad hoc network between them Fly Ad Hoc Networks (FANET). Each drone has the ability to send and receive information (like a router); and can behave as a hierarchical node whit the intregration of three protocols: Multiprotocol Label Switch (MPLS), Fast Hierarchical AD Hoc Mobile (FHAM) and Internet Protocol version 6 (IPv6), in conclusion MPLS + FHAM + IPv6. The metrics analyzed in the FANET are: delay, jitter, throughput, lost and sent packets/received. Testing process was carried out with swarms composed of 10, 20,… More >

YANQIU LI^#,*, CHENJUN HAO^#, WEIYI CHEN, QINGJU MENG

BIOCELL, Vol.46, No.6, pp. 1565-1573, 2022, DOI:10.32604/biocell.2022.018347

Abstract This work aimed to clarify the interaction between the fetus and pregnant patients with gestational diabetes mellitus (GDM), the lipid metabolomics analysis of the fetal umbilical cord blood of GDM patients and normal pregnant women were performed to screen out the specific lipid metabolites for pathogenesis of GDM. From 2019–2020, 21 patients with GDM and 22 normal pregnant women were enrolled in Hexian Memorial Hospital, Panyu District, Guangzhou. The general information such as weight, height, age, body mass index (BMI) before pregnancy were analyzed. Non-targeted metabonomic detection and analysis were performed in umbilical cord plasma using LC-MS method. The age,… More >

S. Kalyani^*, K. Venkata Rao, A. Mary Sowjanya

Structural Durability & Health Monitoring, Vol.15, No.4, pp. 317-334, 2021, DOI:10.32604/sdhm.2021.016975

Abstract Internet of Things systems generate a large amount of sensor data that needs to be analyzed for extracting useful insights on the health status of the machine under consideration. Sensor data of all possible states of a system are used for building machine learning models. These models are further used to predict the possible downtime for proactive action on the system condition. Aircraft engine data from run to failure is used in the current study. The run to failure data includes states like new installation, stable operation, first reported issue, erroneous operation, and final failure. In the present work, the… More >

Sibao Wang, Silin Pan^*, Gang Luo, Zhixian Ji, Na Liu

Congenital Heart Disease, Vol.17, No.1, pp. 45-60, 2022, DOI:10.32604/CHD.2022.016332

Abstract The aim of this study was to perform a systematic review and meta-analysis to evaluate the safety and efficacy of ductus arteriosus stent (DAS) compared with surgical systemic-pulmonary artery shunt (SPS) in patients with ductal-dependent pulmonary blood flow. A literature search was conducted in PubMed, Embase, and the Cochrane Library databases from their inception to December 2020. Two reviewers independently screened the articles, evaluated the quality of the articles, and collected the data. Meta-analyses were conducted using fixed and random effects models. We used the I-square (I² ) test to examine heterogeneity and the funnel plot Egger’s test was used… More >

AMOURA M. ABOU-EL-NAGA¹, SHAKER A. MOUSA², FAYEZ ALTHOBAITI³, EMAN FAYAD^3,*, ENGY S. FAHIM¹

BIOCELL, Vol.46, No.2, pp. 535-545, 2022, DOI:10.32604/biocell.2022.017739

Abstract Testicular damage is one of the most hazardous effects as it’s associated with azoospermia. Busulfan (Bu) is a highly toxic chemotherapeutic drug that affects testis. Thirty male Swiss albino mice divided into six groups of 5 animals each. Control (oral 0.9% saline daily for 75 days); Mel (20 mg/kg/day orally for 30 days); ZnO NPs (5 mg/kg/day i.p. for 30 days); BU (single i.p. injection of 40 mg/kg and then left for 45 days); BU + Mel (single 40 mg/kg dose of BU and left for 45 days followed by 20 mg/kg/day Mel for 30 days); BU + ZnO NPs… More >

JIUCHUN GUO¹, JIE PAN^2,*, QIANQIAN GUO²

BIOCELL, Vol.46, No.2, pp. 505-510, 2022, DOI:10.32604/biocell.2021.015785

Abstract The excessive energy of light, especially the invisible rays with lower wavelength, is basically absorbed by retinal pigment epithelium (RPE) and usually causes DNA damage. The molecular mechanism behind DNA damage repair response to this frequent stress in RPE is not clearly understood. In this study, we determined that the Fanconi anemia (FA) pathway was activated in human RPE ARPE-19 cells after ultraviolet (UV) B and C treatment. Moreover, immunoprecipitation (IP) of FANCD2 indicated that denticleless E3 ubiquitin protein ligase homolog (DTL) closely interacted with FANCD2. Knockdown of DTL weakened the activity of the FA pathway in ARPE-19 cells responding… More >

Ansari Saleh Ahmar^1,2,*, Eva Boj del Val³, M. A. El Safty⁴, Samirah AlZahrani⁴, Hamed El-Khawaga^5,6

CMC-Computers, Materials & Continua, Vol.70, No.3, pp. 6007-6022, 2022, DOI:10.32604/cmc.2022.021382

Abstract This study focuses on the novel forecasting method (SutteARIMA) and its application in predicting Infant Mortality Rate data in Indonesia. It undertakes a comparison of the most popular and widely used four forecasting methods: ARIMA, Neural Networks Time Series (NNAR), Holt-Winters, and SutteARIMA. The data used were obtained from the website of the World Bank. The data consisted of the annual infant mortality rate (per 1000 live births) from 1991 to 2019. To determine a suitable and best method for predicting Infant Mortality rate, the forecasting results of these four methods were compared based on the mean absolute percentage error… More >

Inam Ullah Khan¹, Muhammad Abul Hassan², Muhammad Fayaz³, Jeonghwan Gwak^4,5,6,7,*, Muhammad Adnan Aziz¹

CMC-Computers, Materials & Continua, Vol.70, No.2, pp. 3653-3666, 2022, DOI:10.32604/cmc.2022.020697

Abstract Most interesting area is the growing demand of flying-IoT mergers with smart cities. However, aerial vehicles, especially unmanned aerial vehicles (UAVs), have limited capabilities for maintaining node energy efficiency. In order to communicate effectively, IoT is a key element for smart cities. While improving network performance, routing protocols can be deployed in flying-IoT to improve latency, packet drop rate, packet delivery, power utilization, and average-end-to-end delay. Furthermore, in literature, proposed techniques are very much complex which cannot be easily implemented in real-world applications. This issue leads to the development of lightweight energy-efficient routing in flying-IoT networks. This paper addresses the… More >