An Analysis of the Gear Meshing Characteristics of the Main Planetary Gear Trains of Helicopters Undergoing Shafting Position Changes by Li Xuejun, Jiang Lingli, Hua Dengrong, Yin Daoxuan, Yang Dalian

“…The results obtained in this study revealed the following: (1) the average meshing force of the gears increased with the increases in the angle inclinations, and the meshing force between the sun gears and the planetary gears increased faster than the meshing force between the planetary gears and the inner ring gears. …”
Get full text

Stress distribution in endodontically treated external cervical resorption lesions restored with MTA and biodentine – A finite element analysis by Mudita Manaktala, Sonali Taneja, Vidhi Kiran Bhalla

“…Oblique load of 100 N was applied at 45°angle to the long axis 2 mm lingual to incisal edge. vonMises Stress distribution in enamel, dentine, restoration and at all the interfaces were observed. …”
Get full text

Store Separation: Photogrammetric Solution for the Static Ejection Test by Luiz Eduardo Guarino de Vasconcelos, Nelson Paiva Oliveira Leite, André Yoshimi Kusumoto, Leandro Roberto, Cristina Moniz Araujo Lopes

“…The uncertainty associated with the position measurement of each of the markers varies from ±0.02 mm to ±8.00 mm @1σ, depending on the geometry of the viewing angles. The experiments were carried out at IPEV (Flight Test Research Institute)/Brazil, and the results were considered satisfactory. …”
Get full text

Optimal Inflow Performance Relationship Equation for Horizontal and Deviated Wells in Low-Permeability Reservoirs by Liqiang Wang, Zhengke Li, Mingji Shao, Yinghuai Cui, Wenbo Jing, Wei Zhang, Maoxian Wang

“…Furthermore, through regression and error analyses of the standard inflow performance data, the correlation coefficients and error distributions of six types of IPR equations applicable to deviated and horizontal wells at different inclination angles were compared. The results show that the IPR equation established in this study features good stability and accuracy and that it can fully reflect the particularity of low-permeability reservoir seepage. …”
Get full text

Effect of Learning Environment on Academic Performance of Pupils and Students in Kagango Division Sheema Municipality. by Andonzire, Steve James

“…Finally, the study concluded that t-, classes that can be taken to improve performance in secondary schools as Giving rewards to the best-performing students, Government Involvement in Education, Offering support to the suffering students, providing career guidance in schools, Providing Alternative Sources of power and Encouraging Substitutes and finally the study recommended that the government to support students, especially through organizing seminars to equip students with the necessary knowledge from different angles, establish and implement a new curriculum for all schools in way to be more of practical than theory, school management committees of the selected schools to always assess the performance of teachers in teaching through tasking them to produce timetable and lesson plans prioritize investment in education and develops policies to improve the financing of the education in such way as to provide adequate educational facilities for all schools.…”
Get full text

Minimizing Power Consumption and Interference Mitigation of Downlink NOMA HetNets by IRS-Supported Aerial Base Stations by Osamah Thamer Hassan Alzubaidi, Mhd Nour Hindia, Kaharudin Dimyati, Kamarul Ariffin Noordin, Faizan Qamar, Atef Abdrabou

“…The formulated optimization problem is non-convex due to the joint optimization of ABS power transmission, ABS three-dimensional (3D) positions, IRS reflection angles (RAs), IRS reflection coefficients (RCs), and decoding order (DEO) among GUs. …”
Get full text

Transforaminal Endoscopic Lumbar Discectomy versus Coblation Nucleoplasty Combined with Collagenase Chemonucleolysis for Lumbar Disc Herniation with Grade I Degenerative Spondyloli... by Yuyu Guo, Liuhu Han, Tingting Li, Bingbing Xu, Penghui Ke, Jun Hu, Rongyi Zhang, Yan Guo, Long Zhao, Likui Wang

“…Imaging findings including lumbar lordosis (LL), segmental lordosis angle (SL), slip percentage (SP), and disc height (DH) were compared between the two groups pre-operation and at the last follow-up. …”
Get full text

Comparison of Tropospheric Horizontal Gradients Modeling Methods in LEO Constellation Augmented GNSS Precise Point Positioning by Xinyu Zhang, Wenwu Ding, Xiaochuan Qu, Hongjin Xu, Xuanzhao Tan, Yunbin Yuan

“…In comparison, the analysis of slant path delays accuracy for elevation below 10° shows that the directional model is more suitable for low elevation observations, but the introduction of too many redundant parameters leads to a decrease in the accuracy at high elevation angles. The LEO constellation can bring maximum 32.9%, 12.6%, and 27.9% accuracy improvement for the horizontal component, vertical component, and ZTD parameters during the stable period, while 26.5%, 31.8%, and 34.9% during the severe period. …”
Get full text

Large-scale high purity and brightness structural color generation in layered thin film structures via coupled cavity resonance by Wang Danyan, Ji Chengang, Li Moxin, Xing Zhenyu, Gao Hao, Li Xiaochan, Zhou Huixian, Hu Yuhui, Lin Zhelin, Zhang Cheng

“…For instance, we demonstrate the production of angle-robust structural colors by utilizing high-index Ta2O5 as the dielectric layer. …”
Get full text

Enhanced Control Efficacy of Different Insecticides Mixed with Mineral Oil Against Asian Citrus Psyllid, <i>Diaphorina citri</i> Kuwayama, Under Varying Climates by Wei Hu, Kejing Wang, Xiaoyue Zhong, Pei Jiang, Shunchang Zhang, Zhanjun Lu, Zhixiang Zhang, Long Yi, Ning Zhang

“…The addition of LY decreased both surface tension and contact angle of THX solution on citrus leaves, thereby enhancing the solution’s wetting and increasing THX deposition. …”
Get full text

Reverse Shoulder Arthroplasty Baseplate Stability Is Affected by Bone Density and the Type and Amount of Augmentation by Daniel Ritter, Patric Raiss, Patrick J. Denard, Brian C. Werner, Manuel Kistler, Celina Lesnicar, Micheal van der Merwe, Peter E. Müller, Matthias Woiczinski, Coen A. Wijdicks, Samuel Bachmaier

“…Three correction methods of the glenoid were used: (1) corrective reaming with a standard baseplate, which served as the reference group (<i>n</i> = 10); (2) MA-RSA (<i>n</i> = 10); and (3) angled BIO-RSA (<i>n</i> = 10). Each augment group consisted of 10° (<i>n</i> = 5) and 20° (<i>n</i> = 5) corrections. …”
Get full text

Microscale bone interlocking enhances osseointegration strength on the rough surface of 3D-printed titanium implants: experimental and finite element analysis by Tianyu Shu, Haoyu Shi, Meng Li, Yu-Chia Lin, Ang Li, Dandan Pei

“…Implant surfaces were characterized with scanning electron microscopy, surface profilometry, energy-dispersive X-ray spectroscopy, and a contact angle meter. Implants (n = 10) were surgically inserted into the femoral condyle of New Zealand rabbits. …”
Get full text

Adulthood consequences of spinal deformity surgeries in neurofibromatosis type 1 patients by Arihiko Tsukamoto, Koki Uno, Teppei Suzuki, Masaaki Ito, Keita Nakashima, Kenichiro Kakutani, Yoshiki Takeoka

“…The idiopathic scoliosis group includes 110 patients who had undergone surgery from 2015 to 2018 at our hospital and 38 patients(2 males, 36 females) were selected by excluding patients who could not be followed up until the age of 18 years and those who did not describe their HR-QOL, and adjusting the mean preoperative cobb angle values to match those of the NF-1 group. Results The mean age at the initial surgery was 14.6 [4〜49] years, and the mean age at the last observation was 29.4 [18〜56] years. …”
Get full text

Effects of tongue tamers and customized bonded spurs as an early treatment of anterior open bite: a randomized clinical study by Safa B. Alawy, Shaimaa S. EL-Desouky, Ibrahim A. Kabbash, Shimaa M. Hadwa

“…The U1/FHP and L1/GoGn angles were non-significantly decreased in all tested groups with the highest decrease in group-I(-1.76 ± 1.00 and-2.54 ± 0.87 respectively). …”
Get full text

Calculation Method of Overburden Damage Height Based on Fracture Mechanics Analysis of Soft and Hard Rock Layers by Liang Chen, Shaowu Fan, Can Zhao, Lang Zhang, Zhiheng Cheng

“…The calculation accuracy of the proposed method was higher than that of the three conventional theoretical methods, and it effectively solved the limitation of the fracture analysis method without the inclusion of the soft rock layer in design and the distortion problem due to the residual bulking coefficient to be improperly used in simulation. (2) There was no noticeable fractures in the broken soft rock zone, and the whole fractures were mainly low-angle rupture; the fractures in hard rock layer had obvious ruptures and multiangle cracks, and the average fracture width of soft rock was 2.8 mm smaller than that of hard rock. …”
Get full text

Three-dimensional evaluation of tongue position and volume in adult patients with different skeletal malocclusions by CHIOU Wei-Cho, MEN Xinrui, ZHANG Kaiwen, JIANG Xiaoge, CHEN Song

“…Cone-beam computed tomography (CBCT) and cephalometric radiographs were collected from 60 adult patients, divided into three groups based on ANB angle values: skeletal Class I (0&#x00B0; &lt; ANB &lt; 4&#x00B0;), II (ANB &gt; 4&#x00B0;), and III (ANB &lt; 0&#x00B0;), with 20 cases in each group. …”
Get full text

Biogenic Waste from Two Varieties of Plantain in Ghana Contain Pectin with Potential Binding Properties in Conventional Tablets by Desmond Asamoah Bruce Otu, Frederick William Akuffo Owusu, Mariam El Boakye-Gyasi, Raphael Johnson, Prince George Jnr Acquah, Yayra Edzor-Agbo, Marcel Tunkumgnen Bayor, Mary-Ann Archer

“…Granules from all formulation batches had good flow properties indicated by their angle of repose (14.93 ± 1.41–21.80 ± 1.41), Hausner ratio (0.96 ± 0.27–1.22 ± 0.02), and compressibility (%) (7.69 ± 0.002–20.51 ± 0.002). …”
Get full text

Syntheses and structures of two coordination polymers formed by Ni(cyclam)2+ cations and sulfate anions by Liudmyla V. Tsymbal, Irina L. Andriichuk, Lucian G. Bahrin, Yaroslaw D. Lampeka

“…The distances between the neighboring metal ions in the chains are significantly different [6.5121 (6) Å in I and 6.0649 (3) Å in II] and this peculiarity is explained by the different spatial directivity of the Ni—O coordination bonds (different S—O—Ni angles). As a result of the C—H...O hydrogen bonds between the methylene groups of the macrocyclic ligands and the non-coordinated O atoms of the sulfate anion, the coordination-polymeric chains in I are arranged in the two-dimensional layers oriented parallel to the (010) and (101) planes, the intersection of which provides the three-dimensional coherence of the crystals. …”
Get full text

Value of Anterior Band of the Inferior Glenohumeral Ligament Area as a Morphological Parameter of Adhesive Capsulitis by Yun-Sic Bang, Junbeom Park, Sun Young Lee, Jiyeon Park, Sukhee Park, Young Joo, Young Uk Kim, Yoon Kyung Lee

“…However, the thickness varies from the measured angle. To reduce this measurement error, we devised a new morphological parameter, called the anterior band of inferior glenohumeral ligament area (aIGHLA). …”
Get full text

Designing and modeling an intelligent system for managing the distribution and scheduling of farmed fish feed using the Arduino Uno microcontroller by Shayesteh Tabatabaei

“…Materials and methods: The main components of the fish feed distribution and scheduling system consist of three essential elements: the Arduino Uno board, serving as a programmable platform; a servo motor with a single output shaft capable of positioning itself at a specific angle by receiving encoded signals; and a feeder, functioning as a storage and dispensing container for fish feed in the aquaculture system. …”
Get full text