A New Approach on Vibrating Horns Design by Maria Violeta Guiman, Ioan Călin Roșca

“…An optimization method of the vibrating horns is presented considering the smallest action principle and the attached cutting tool mass. …”
Get full text

Research into the processing of gold-containing technogenic waste by Khujakulov Nurmurod, Nasirova Nigora

“…These findings contribute to the development of efficient processing methods for technogenic waste from gold extraction operations.…”
Get full text

A scenario-based alternative to conventional tools for choosing the strategy in turbulent environments by Ali Sorourkhah

“…The proposed method involves a case study related to a distributing centre for a food and beverage company located west of Mazandaran province, Iran. …”
Get full text

Detection and Classification of Power Quality Disturbances Based on Improved Adaptive S-Transform and Random Forest by Dongdong Yang, Shixuan Lü, Junming Wei, Lijun Zheng, Yunguang Gao

“…The increasing penetration of renewable energy into power systems has intensified transient power quality (PQ) disturbances, demanding efficient detection and classification methods to enable timely operational decisions. …”
Get full text

Total Flavonoid Content and Antioxidant Activity of Different Polarity Extracts from Pereskia bleo Leaves by Ni Made Dwi Mara Widyani Nayaka, Erna Cahyaningsih, Maria Malida Vernandes Sasadara, Putu Era Sandhi Kusuma Yuda, Felia Riska Indriani

“…The nonpolar solvent (n-hexane) was used as the first step of extraction and its residues were then macerated using semi-polar (ethyl acetate) and polar (ethanol 96%) solvents consecutively. The TFC was determined using the colorimetric method while antioxidant activity was examined through the 2,2-diphenyl-1-picrylhydrazyl (DPPH) method. …”
Get full text

Research on Key Parameters of Building Load Model for Dynamic Performance Measurement of Air Conditioner by Gao Yuping, Wen Chengyu, Shi Wenxing, Han Xing, Cheng Jianhong, Cai Ning, Wang Chao, Yang Zixu

“…Given that the steady-state condition measurement in the laboratory cannot fully reflect the actual performance issues of air conditioners, the dynamic performance measurement of room air conditioners based on virtual buildings has become a current research hotspot. This paper determines the key parameters for the dynamic performance measurement of room air conditioners through simulation and model analysis methods: the load point of the building, the zero-load point, the heat and cold ratio, the sensible heat ratio, the selection coefficient, and the effective heat capacity and moisture capacity of the room. …”
Get full text

Evaluation of the Routine Childhood Immunization Program Process at Primary Health Care Centers in Salah Al-Dean Governorate by Majid Hassoon, Mohammed Khalifa

“…Instrument content validity is determined by a panel of (18) experts. Internal consistency reliability is determined through Cronbach alpha correlation coefficient. …”
Get full text

Management and Productivity: Foreign Conceptions and Verification Problem by E. L. Moreva

“…Their application with the survey method would result in the constitution of the efficient instrument not only for the operative and reliable determination of the link between management and productivity of various sectors and countries but for the respective economic policy elaborated and realized on such a basis. …”
Get full text

Reflections of linearly polarized electromagnetic waves from a multilayer periodic mirror by D. Kh. Nurligareev, I. A. Nedospasov, K. Yu. Kharitonova

“…The purpose of the article is to carry out a theoretical and experimental study of the angular reflection spectrum of linearly polarized electromagnetic waves from a multilayer periodic mirror on a transparent substrate to exact analytical expressions for reflection and transmission coefficients generalizing the cases of incidence of plane transverse electric (TE) and transverse magnetic (TM) modes on limited periodically structured media with a stepped refractive index profile.Methods. …”
Get full text

Scourability of Undisturbed Soils of Different Land Use Types in Loess Hilly Region Under Natural Freezing and Thawing Conditions by Bo Lanfeng, Li Zhanbin, Ma Bo, Xiao Lie

“…[Objective] The effects of freezing and thawing on soil erosion resistance of three land use types (sloping farmland, grassland, and shrub land) were studied in order to provide a theoretical basis for vegetation restoration and construction in the seasonal freezing and thawing area of the Loess Plateau. [Methods] Based on a series of natural freezing and thawing cycles, field monitoring, and undisturbed soil scouring tests, the effects of freezing and thawing on soil erosion resistance of the three aforementioned land use types were determined. …”
Get full text

Testicular Torsion in Children. Diagnostic and Prognostic Potential of Ultrasonography by E. B. Olkhova, M. V. Topolnik, A. S. Gulenkov

“…During statistical processing we determined the mean values, their standard deviation, sampling errors, significance of differences in the mean values, correlation coefficient and did ROC analysis. …”
Get full text

Extraction of Abandoned Cropland Using Multisource Remote Sensing Images in Suburban Regions: A Case Study of Zengcheng, Guangdong Province by Shanshan Feng, Shun Jiang, Xu Liu, Lei Zhang, Yangying Gan, Ning Xia, Wenbin Wu, Canfang Zhou

Get full text

The Noninvasive Measurement of Ocular Rigidity and the Pulsatile Choroidal Volume Change in Children and Young Adults by Martin Reyes, Sage Smith, Kelly Lam, Yasaman Adel, Nimesh B. Patel, OD, PhD, Diane N. Sayah, OD, PhD

“…Intrasession repeatability for OR and ΔV was assessed in 31 eyes and was determined to be excellent based on a single measure intraclass correlation coefficient of 0.912, 95% confidence interval (CI) (0.825, 0.956) and 0.941, 95% CI (0.879, 0.972), respectively and a within-subject standard deviation of 0.0037 μL−1 and 1.14 μL, respectively. …”
Get full text

Optical coherence tomography angiography and progressive retinal nerve fiber layer loss in mild to moderate open-angle glaucoma. by Zia Sultan Pradhan, Thanemozhi Srinivasan, Shruthi Sreenivasaiah, Dhanaraj As Rao, Sujani Shroff, Sathi Devi, Carroll A B Webers, Harsha Laxmana Rao

“…<h4>Purpose</h4>To evaluate the association between optical coherence tomography (OCT) angiography measurements and progressive retinal nerve fiber layer (RNFL) loss in eyes with mild to moderate open-angle glaucoma.<h4>Methods</h4>In this prospective study, 111 quadrants of 59 eyes with mild-moderate open-angle glaucoma were longitudinally evaluated for a minimum of 2 years with at least 3 OCT scans performed. …”
Get full text

Resistance and metabolic pathway of Spodoptera frugiperda population to beta cypermethrin in Sichuan by Huilin CHEN, Yutong WU, Jie GAO, Xiang XU, Xuegui WANG, Jizhi YANG

“…ObjectiveTo investigate the resistance and metabolic pathways of beta cypermethrin in fall armyworm (Spodoptera frugiperda) populations in Sichuan. MethodThe resistance levels of fall armyworm to beta cypermethrin in MY, DC, CX, HD and RH populations in Sichuan were determined by drip method. …”
Get full text

Study on the Photosynthetic Physiological Responses of Greenhouse Young Chinese Cabbage (<i>Brassica rapa</i> L. <i>Chinensis Group</i>) Affected by Particulate Matter Based on Hyp... by Lijuan Kong, Siyao Gao, Jianlei Qiao, Lina Zhou, Shuang Liu, Yue Yu, Haiye Yu

“…The coefficient of determination (R²) of the model is 0.9513. …”
Get full text

Modeling of hydrogen sulfide removal from Petroleum production facilities using H2S scavenger by H.A. Elmawgoud, T.M. Elshiekh, S.A. Khalil, A.M. Alsabagh, Mamoun Tawfik

“…The effect of variable parameters such as, gas flow rates, chemical injection doses, pipe diameter and length on mass transfer coefficient KGa, H2S outlet concentration and H2S scavenger efficiency has been studied. …”
Get full text

Ultrasound Treatment of Iota-Carrageenan and Guar Gum by Kseniya N. Nitsievskaya, Svetlana V. Stankevich, Elena V. Boroday

“…The viscosity, active acidity, temperature, and transparency (transmission coefficient, T, %) of the obtained colloidal systems were determined using standard methods, while the sensory profile was defined by the descriptor-profile method. …”
Get full text

Practical study for comparing edge detection filters in digital image processing by Yahya Ismail Ibrahim, Israa Mohammed Alhamdani

“…The research aims to reach an appropriate image purification by using different types of filters and to reduce distortions at the edges of the image and to determine which type of filter is the best. As well as, a comparison operation is applied between the traditional method and the hybrid method. …”
Get full text

Construction Robust -Chart and Compare it with Hotelling’s T2-Chart by Bekhal Samad Sedeeq, Zainab Abdulla Muhammad, Israa Muayad Ali, Taha Hussein Ali

“…Then the comparison between the proposed and classical method of the researcher Shewhart depending on the total variance (trace variance matrix) and the general variance (determinant of the variance matrix) to obtain the most efficient paintings against outliers through simulation and real data and using a program in MATLAB language designed for this purpose. …”
Get full text