keyword
https://read.qxmd.com/read/38645522/confined-microemulsions-pore-diameter-induced-change-of-the-phase-behavior
#21
JOURNAL ARTICLE
René Haverkamp, Margarethe Dahl, Tim Julian Stank, Jessica Hübner, Peter Strasser, Stefan Wellert, Thomas Hellweg
In the present work, the temperature-dependent phase behavior of a C10 E4 based microemulsion is studied in different meso-macroporous glasses, as a function of their pore diameter. The phase behavior in these pores is investigated by small-angle X-ray scattering (SAXS). The crucial parameter we discuss based on the SAXS results is the domain size of the bicontinuous phase. Using a simplified model to fit the scattering data, we can observe the microemulsion inside the pores. These experiments reveal a temperature-dependent change in domain sizes of the bicontinuous microemulsion only for large pores...
April 16, 2024: RSC Advances
https://read.qxmd.com/read/38645375/study-on-key-technologies-of-geosteering-for-shale-gas-horizontal-wells-in-the-complex-structural-area-of-block-h-in-western-hubei-eastern-chongqing
#22
JOURNAL ARTICLE
Wenrui Shi, Yijiang Feng, Hongyan Zhao, Zisang Huang, Meiyu Guo, Shu Jiang, Yawen Li, Hua Huang, Yuanhui Shi
Block H, located in western Hubei-eastern Chongqing, remains at a low exploration degree. Characterized by its complex structural attributes, the area presents adverse conditions such as a thin thickness of high-quality shale reservoir, rapid lateral formation occurrence, and poor stratigraphic correlation, challenging conventional geosteering methods. The primary shale gas reservoir in Block H corresponds to the Upper Permian Wujiaping Formation. To ensure that the shale gas horizontal wells in this block effectively penetrate high-quality gas reservoirs, this study delves into the geological characteristics of this stratigraphic unit, identifies principal challenges faced by current geosteering techniques, and introduces a tailored technical solution...
April 16, 2024: ACS Omega
https://read.qxmd.com/read/38645319/imbibition-characteristics-and-influencing-factors-of-the-fracturing-fluid-in-a-tight-sandstone-reservoir
#23
JOURNAL ARTICLE
Tian Li, Dazhong Ren, Haipeng Sun, Hu Wang, Tao Tian, Qihui Li, Zhen Yan
The strong reservoir heterogeneity and complex microscopic pore structure in the Linxing area make it prone to water block damage during imbibition development. In order to explore the influence of reservoir microscopic characteristics on imbibition efficiency, taking the tight sandstone gas reservoir in the Linxing area of Ordos Basin as an example, the heterogeneity of the tight sandstone reservoir in the study area is characterized in terms of physical and chemical characteristics as well as the microscopic pore structure...
April 16, 2024: ACS Omega
https://read.qxmd.com/read/38645274/effects-of-n-glycans-on-the-structure-of-human-iga2
#24
JOURNAL ARTICLE
Valentina Ruocco, Clemens Grünwald-Gruber, Behzad Rad, Rupert Tscheliessnig, Michal Hammel, Richard Strasser
The transition of IgA antibodies into clinical development is crucial because they have the potential to create a new class of therapeutics with superior pathogen neutralization, cancer cell killing, and immunomodulation capacity compared to IgG. However, the biological role of IgA glycans in these processes needs to be better understood. This study provides a detailed biochemical, biophysical, and structural characterization of recombinant monomeric human IgA2, which varies in the amount/locations of attached glycans...
2024: Frontiers in Molecular Biosciences
https://read.qxmd.com/read/38645028/a-registration-strategy-to-characterize-dti-observed-changes-in-skeletal-muscle-architecture-due-to-passive-shortening
#25
Melissa T Hooijmans, Carly A Lockard, Xingyu Zhou, Crystal Coolbaugh, Roberto Pineda Guzman, Mariana E Kersh, Bruce M Damon
Skeletal muscle architecture is a key determinant of muscle function. Architectural properties such as fascicle length, pennation angle, and curvature can be characterized using Diffusion Tensor Imaging (DTI), but acquiring these data during a contraction is not currently feasible. However, an image registration-based strategy may be able to convert muscle architectural properties observed at rest to their contracted state. As an initial step toward this long-term objective, the aim of this study was to determine if an image registration strategy could be used to convert the whole-muscle average architectural properties observed in the extended joint position to those of a flexed position, following passive rotation...
April 14, 2024: bioRxiv
https://read.qxmd.com/read/38644923/a-radiological-parametric-comparison-of-low-grade-lytic-spondylolisthesis-to-degenerative-spondylolisthesis-a-retrospective-approach-to-establish-its-dysplastic-origin
#26
JOURNAL ARTICLE
K R Pratap, Vikas Tandon, Aditya Sunder Goparaju, Aayush Aryal
OBJECTIVES: This study aims to compare low-grade lytic spondylolisthesis (LS) and degenerative spondylolisthesis (DS) radiologically. In addition, it seeks to identify underlying similarities between LS and DS. METHODS: This study included patients with low-grade single-level spondylolisthesis at L4-L5 or L5-S1. They were categorized into LS and DS. Radiological features, including pedicle height, width, transverse, and sagittal angle, as well as anterior vertebral heights (AVH) and posterior vertebral heights (PVH), were measured using T1-weighted magnetic resonance imaging...
2024: Journal of Craniovertebral Junction and Spine
https://read.qxmd.com/read/38644912/upper-and-lower-cervical-alignment-parameters-measured-on-supine-magnetic-resonance-imaging-with-the-occipital-slope-as-a-key-marker-of-cervical-alignment
#27
JOURNAL ARTICLE
Hamza Karabag, Ahmet Celal Iplikcioglu
OBJECTIVES: Cervical spine alignment is evaluated by measuring the cervical angles or parameters on standing plain radiography. In this study, we aimed to evaluate mainly the upper cervical alignment and the correlation between upper and lower cervical sagittal parameters measured on supine magnetic resonance imaging (MRI). MATERIALS AND METHODS: Cervical MRIs of 210 outpatients were reviewed to measure the upper and lower cervical sagittal parameters. Their mean values were compared with normative values measured on standing X-ray from the literature...
2024: Journal of Craniovertebral Junction and Spine
https://read.qxmd.com/read/38644864/-tricholoma-matsutake-polysaccharides-suppress-excessive-melanogenesis-via-jnk-mediated-pathway-investigation-in-8-methoxypsoralen-induced-b16-f10-melanoma-cells-and-clinical-study
#28
JOURNAL ARTICLE
Yang Yang, Zheng Lv, Quan An, Detian Xu, Longjie Sun, Yiming Wang, Xuexue Chen, Xue Shao, Tong Huo, Shuangrui Yang, Jiali Liu, Haoshu Luo, Qianghua Quan
Skin hyperpigmentation is a worldwide condition associated with augmented melanogenesis. However, conventional therapies often entail various adverse effects. Here, we explore the safety range and depigmentary effects of polysaccharides extract of Tricholoma matsutake (PETM) in an in vitro model and further evaluated its efficacy at the clinical level. An induced-melanogenesis model was established by treating B16-F10 melanoma cells with 8-methoxypsoralen (8-MOP). Effects of PETM on cell viability and melanin content were examined and compared to a commonly used depigmentary agent, α-arbutin...
April 30, 2024: Heliyon
https://read.qxmd.com/read/38644812/ground-effect-of-an-inverted-double-element-wing-diffuser-on-a-sedan-car
#29
JOURNAL ARTICLE
Mustafa Sabeeh Abood, IhsanYahya Hussain
The diffuser is a critical component in sports cars, enhancing aerodynamics by increasing downforce and reducing drag. Previous studies have focused on its dependence on diffuser incidence, height, and base pressure. The design of the car, particularly the rear end shape and the rear wing's presence, affect base pressure and the diffuser's performance. Previous studies have investigated the effects of diffuser geometry on aerodynamic performance, but the current study is the first to examine the relationship between the diffuser and the rear tires...
April 30, 2024: Heliyon
https://read.qxmd.com/read/38644779/foot-pain-in-children-and-adolescents-a-problem-based-approach-in-musculoskeletal-ultrasonography
#30
JOURNAL ARTICLE
Lihua Liu, Tiezheng Wang, Hengtao Qi
Various etiologies and risk factors contribute to foot pain in children and adolescents, including conditions such as Kohler's disease, Sever's disease, Iselin's disease, rigid flat foot, accessory navicular, Freiberg's disease, sesamoiditis, os trigonum syndrome, and more. High-frequency musculoskeletal ultrasonography can show both the bone surface and the surrounding soft tissue clearly from various angles in real-time, thereby providing a higher level of detail that is helpful for identifying the etiology of foot pain and monitoring disease progression compared with other imaging modalities...
March 19, 2024: Ultrasonography
https://read.qxmd.com/read/38644766/3-dimensional-evaluation-of-two-pnam-techniques-modified-grayson-alignernam-on-facial-soft-tissue-morphology-a-randomised-clinical-trial
#31
JOURNAL ARTICLE
Alisha K H, Puneet Batra, Achint Juneja, Aditya Talwar, Stuti Mohan, S C Sood
OBJECTIVE: Evaluate facial changes after Presurgical Naso-Alveolar Molding (PNAM) in unilateral cleft lip and palate (UCLP) patients treated with Modified Grayson Technique and AlignerNAM (with DynaCleft nasal elevator) using a 3D facial scan. DESIGN: Randomised clinical trial. SETTING: Institutional study. Participants: 20 UCLP patients allocated to two groups (10 patients each). INTERVENTIONS: Group A patients underwent PNAM with Modified Grayson Technique and Group B patients underwent AlignerNAM (with DynaCleft nasal elevator)...
April 22, 2024: Cleft Palate-craniofacial Journal
https://read.qxmd.com/read/38644663/effects-of-gait-retraining-using-minimalist-shoes-on-the-medial-gastrocnemius-muscle-tendon-unit-behavior-and-dynamics-during-running
#32
JOURNAL ARTICLE
Liqin Deng, Boyi Dai, Xini Zhang, Songlin Xiao, Weijie Fu
The effects of a 12-week gait retraining program on the adaptation of the medial gastrocnemius (MG) and muscle-tendon unit (MTU) were investigated. 26 runners with a rearfoot strike pattern (RFS) were randomly assigned to one of two groups: gait retraining (GR) or control group (CON). MG ultrasound images, marker positions, and ground reaction forces (GRF) were collected twice during 9 km/h of treadmill running before and after the intervention. Ankle kinetics and the MG and MTU behavior and dynamics were quantified...
April 2024: Scandinavian Journal of Medicine & Science in Sports
https://read.qxmd.com/read/38644460/electrospinning-of-poly-ethylene-oxide-glass-hybrid-nanofibres-for-anticounterfeiting-encoding
#33
JOURNAL ARTICLE
Mohamed H El-Newehy, Ali Aldalbahi, Badr M Thamer, Meera Moydeen Abdulhameed
The use of photochromism to increase the credibility of consumer goods has shown great promise. To provide mechanically dependable anticounterfeiting nanofibres, it has also been critical to improve the engineering processes of authentication patterns. Mechanically robust and photoluminescent electrospun poly(ethylene oxide)/glass (PGLS) nanofibres (150-350 nm) immobilized with nanoparticles of lanthanide-doped aluminate (NLA; 8-15 nm) were developed using electrospinning technology for anticounterfeiting purposes...
April 2024: Luminescence: the Journal of Biological and Chemical Luminescence
https://read.qxmd.com/read/38644423/gender-differences-in-spinal-mobility-during-postural-changes-a-detailed-analysis-using-upright-ct
#34
JOURNAL ARTICLE
Ryo Mizukoshi, Mitsuru Yagi, Yoshitake Yamada, Yoichi Yokoyama, Minoru Yamada, Kota Watanabe, Masaya Nakamura, Takeo Nagura, Masahiro Jinzaki
Lumbar spinal alignment is crucial for spine biomechanics and is linked to various spinal pathologies. However, limited research has explored gender-specific differences using CT scans. The objective was to evaluate and compare lumbar spinal alignment between standing and sitting CT in healthy individuals, focusing on gender differences. 24 young and 25 elderly males (M) and females (F) underwent standing and sitting CT scans to assess lumbar spinal alignment. Parameters measured and compared between genders included lumbar lordosis (LL), sacral slope (SS), pelvic tilt (PT), pelvic incidence (PI), lordotic angle (LA), foraminal height (FH), and bony boundary area (BBA)...
April 21, 2024: Scientific Reports
https://read.qxmd.com/read/38644375/seismic-response-analysis-of-subway-station-under-obliquely-incident-sv-waves
#35
JOURNAL ARTICLE
Hui Zhu, Songhong Yan, Weiyu Sun, Rongling Zhang, Erfeng Ou, Qingguo Liang
This paper aims to investigate the dynamic response characteristics of subway station under earthquakes. To this end, seismic waves are transformed into equivalent nodal loads on viscoelastic artificial boundaries using theories and methods of wave motion. The calculation formulas for equivalent nodal loads of SV waves incident at any angle are established, and ANSYS' APDL program compiles to automatically generate the viscoelastic artificial boundary and input the seismic loads. A finite element model of soil-subway station interaction was established, and the seismic response characteristics of a two-story three-span subway station under different incidence angles of SV waves were investigated using the above seismic input method...
April 21, 2024: Scientific Reports
https://read.qxmd.com/read/38644348/solvent-free-mechanosynthesis-of-oligopeptides-by-coupling-peptide-segments-of-different-lengths-elucidating-the-role-of-cesium-carbonate-in-ball-mill-processes
#36
JOURNAL ARTICLE
Aneta Wroblewska, Irena Bak-Sypiei, Piotr Paluch, Ewelina Wielgus, Justyna Zajac, Agata Jeziorna, Slawomir Kazmierski, Marek Potrzebowski
We report an idea for the synthesis of oligopeptides using a solvent-free ball milling approach. Our concept is inspired by block play, in which it is possible to construct different objects using segments (blocks) of different sizes and lengths. We prove that by having a library of short peptides and employing the ball mill mechanosynthesis (BMMS) method, peptides can be easily coupled to form different oligopeptides with the desired functional and biological properties. Optimizing the BMMS process we found that the best yields we obtained when TBTU and cesium carbonate were used as reagents...
April 21, 2024: Chemistry: a European Journal
https://read.qxmd.com/read/38644313/-a-case-of-stage-%C3%A2-gastric-cancer-with-multiple-liver-metastases-resected-primary-tumor-after-chemotherapy-and-alive-for-3-5-years-without-recurrence
#37
JOURNAL ARTICLE
Tetsushi Nakagawa, Yuji Yamamoto, Senichiro Yanagawa, Shohei Shiozaki, Yuuki Kaneko, Atsuhiro Watanabe, Mai Nishina, Daisuke Takei, Yusuke Sumi, Minoru Yamaki, Manabu Kurayoshi, Junji Hashizume, Akihiko Oshita, Masahiro Nakahara, Toshio Noriyuki
A 67-year-old man visited our hospital for epigastric pain. Esophagogastroduodenoscopy(EGD)revealed type 2 gastric cancer from the cardia to the gastric angle, and histopathological examination revealed papillary adenocarcinoma(pap), HER2-positive. Contrast-enhanced CT showed wall thickening mainly in the posterior wall of the gastric body, enlarged lymph nodes that were lumped together with the main lesion, and 8 low-absorption areas with ring shaped contrast effects in both lobes of the liver. The patient was diagnosed as gastric cancer cT4aN(+)M1[HEP], clinical Stage ⅣB...
April 2024: Gan to Kagaku Ryoho. Cancer & Chemotherapy
https://read.qxmd.com/read/38644213/sealing-ability-of-various-endodontic-sealers-with-or-without-ethylenediaminetetraacetic-acid-edta-treatment-on-bovine-root-canal
#38
JOURNAL ARTICLE
Yusuke Aigami, Tomofumi Sawada, Shunsuke Shimizu, Akiko Asano, Mamoru Noda, Shinji Takemoto
This study investigated the wettability and consistency of various endodontic sealers, both inorganic and organic, and evaluated their sealing ability of root canals using the single-cone obturation technique, with and without ethylenediaminetetraacetic acid (EDTA) treatment. Bovine root canals were endodontically prepared and filled in preparation for the dye penetration test with toluidine blue solution. All sealers exhibited contact angles similar to or lower than dentin and displayed superior consistency...
April 19, 2024: Dental Materials Journal
https://read.qxmd.com/read/38644090/male-to-female-transgenders-demonstrated-unique-perspectives-on-perceived-facial-attractiveness-and-orthognathic-surgery-need
#39
JOURNAL ARTICLE
Kannalin Torteeka, Niramol Chamnannidiadha
PURPOSE: The esthetic preference and decision concerning undergoing orthognathic surgery in the transgender population have not been reported. The aims of this study were to examine the influence of the sagittal mandibular position on the esthetic perception and perceived surgery need in male-to-female transgenders (MTFTs) compared with male and female laypeople. MATERIALS AND METHODS: A questionnaire study was performed by male-to-female transgender, male and female laypeople...
April 20, 2024: Journal of the World Federation of Orthodontists
https://read.qxmd.com/read/38644012/neurotoxicity-of-tetramethylammonium-ion-on-larval-and-juvenile-zebrafish-effects-on-neurobehaviors-and-multiple-biomarkers
#40
JOURNAL ARTICLE
Ruixin Zhang, Rui Wang, Jiajun Chang, G Daniel Sheng, Daqiang Yin
Tetramethylammonium hydroxide (TMAH) is an important compound that utilized and released by the rapidly expanding semiconductor industry, which could hardly be removed by the conventional wastewater treatment techniques. As a cholinergic agonist, the tetramethylammonium ion (TMA+ ) has been reported to induce toxicity to muscular and respiratory systems of mammals and human, however the toxicity on aquatic biota remains poorly known. We investigated the neurotoxic effects of TMA+ exposure on zebrafish, based on neurobehavior tests and a series of biomarkers...
September 2024: Journal of Environmental Sciences (China)
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