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https://www.readbyqxmd.com/read/28328841/increased-hpv-l1-gene-methylation-and-multiple-infection-status-lead-to-the-difference-of-cervical-epithelial-cell-lesion-in-different-ethnic-women-of-xinjiang-china
#1
Feng Yang-Chun, Zhang Yuan, Liu Cheng-Ming, Huang Yan-Chun, Ma Xiu-Min
Human papillomavirus (HPV) L1 gene methylation deeply involved in the progression and heterogeneity of cervical cell epithelial lesions. The DNA ploidy also represented the early lesions of cervical cell, and it was associated with different HPV infection status in different ethnic women. So, the research was to explore whether it was possible that HPV L1 gene methylation and HPV infection status as the risk factors to lead to the differences of cervical epithelial cells' lesions in different ethnics women...
March 2017: Medicine (Baltimore)
https://www.readbyqxmd.com/read/28326705/-rotation-and-advancement-of-the-radial-based-fasciocutaneous-flap-for-primary-closure-of-the-radial-forearm-flap-donor-defect
#2
Gao Zhengyang, Jiang Canhua, Chen Jie, Wu Limeng, Ren Hui, Long Fuqiang, He Chunrui, Jian Xinchun
OBJECTIVE: This study aims to investigate the feasibility and clinical application value of a new method for primary donor-site closure of radial forearm flaps with the use of rotation and advancement of radial-based fasciocutaneous flaps. METHODS: The forearm donor-site defects of 36 patients were primarily closed by rotation and advancement of radial-based fasciocutaneous flaps after radial flap harvest from November 2014 to May 2015. Patients included 28 males and 8 females aged 28 to 67 years (53...
October 1, 2016: Hua Xi Kou Qiang Yi Xue za Zhi, Huaxi Kouqiang Yixue Zazhi, West China Journal of Stomatology
https://www.readbyqxmd.com/read/28322752/neuroprotector-effect-of-stem-cells-from-human-exfoliated-deciduous-teeth-transplanted-after-traumatic-spinal-cord-injury-involves-inhibition-of-early-neuronal-apoptosis
#3
Fabrício do Couto Nicola, Marília Rossato Marques, Felipe Odorcyk, Danusa Mar Arcego, Letícia Petenuzzo, Dirceu Aristimunha, Adriana Vizuete, Eduardo Farias Sanches, Daniela Pavulack Pereira, Natasha Maurmann, Carla Dalmaz, Patricia Pranke, Carlos A Netto
Stem cells from human exfoliated deciduous teeth (SHED) transplants have been investigated as a possible treatment strategy for spinal cord injuries (SCI) due to their potential for promoting functional recovery. The aim of present study was to investigate the effects of SHED on neuronal death after an experimental model of SCI. METHODS: Wistar rats were spinalized using NYU impactor®. Animals were randomly distributed into 4 groups: Control (Naive) or Surgical control, Sham (laminectomy with no SCI); SCI (laminectomy followed by SCI, treated with vehicle); SHED (SCI treated with intraspinal transplantation of 3×10(5) SHED, 1 h after SCI)...
March 16, 2017: Brain Research
https://www.readbyqxmd.com/read/28322041/printable-transfer-free-and-wafer-size-mos2-graphene-van-der-waals-heterostructures-for-high-performance-photodetection
#4
Qingfeng Liu, Brent Cook, Maogang Gong, Youpin Gong, Ewing Dan, Matthew Casper, Alex Stramel, Judy Z Wu
Two-dimensional (2D) MoS2/graphene van der Waals heterostructures integrate the superior light-solid interaction in MoS2 and charge mobility in graphene for high-performance optoelectronic devices. Key to the device performance lies in a clean MoS2/graphene interface to facilitate efficient transfer of photo-generated charges. Here we report a printable and transfer-free process for fabrication of wafer-size MoS2/graphene van der Waals heterostructures obtained using a metal-free-grown graphene, followed by low-temperature growth of MoS2 from the printed thin film of ammonium thiomolybdate on graphene...
March 21, 2017: ACS Applied Materials & Interfaces
https://www.readbyqxmd.com/read/28319663/2h-ws2-quantum-dots-produced-by-modulating-the-dimension-and-phase-of-1t-nanosheets-for-antibody-free-optical-sensing-of-neurotransmitters
#5
Man-Jin Kim, Su-Ji Jeon, Tae Woog Kang, Jong-Min Ju, DaBin Yim, Hye-In Kim, Jung Hyun Park, Jong-Ho Kim
Modulating the dimensions and phases of transition metal dichalcogenides is of great interest to enhance their intrinsic properties or to create new physicochemical properties. Herein, we report an effective approach to synthesize 2H-WS2 quantum dots (QDs) via the dimension and phase engineering of 1T-WS2 nanosheets. The solvothermal reaction of chemically-exfoliated 1T-WS2 nanosheets in N-methyl-2-pyrrolidone (NMP) under an N2 atmosphere induced their chopping and phase transition at lower temperature to produce 2H-WS2 QDs with a high quantum yield (5...
March 20, 2017: ACS Applied Materials & Interfaces
https://www.readbyqxmd.com/read/28318219/structural-exfoliation-of-layered-cathode-under-high-voltage-and-its-suppression-by-interface-film-derived-from-electrolyte-additive
#6
Yunmin Zhu, Xueyi Luo, Huozhen Zhi, Xuerui Yang, Lidan Xing, Youhao Liao, Mengqing Xu, Weishan Li
Layered cathodes for lithium-ion battery, including LiCo1-x-yNixMnyO2 and xLi2MnO3·(1-x) LiMO2 (M=Mn, Ni and Co), are attractive for large scale applications such as electric vehicles, because they can deliver additional specific capacity when the end of charge voltage is improved to over 4.2 V. However, operation under a high voltage might cause capacity decaying of layered cathodes during cycling. The failure mechanisms that have been given, up to date, include the electrolyte oxidation decomposition, the Ni, Co or Mn ion dissolution and the phase transformation...
March 20, 2017: ACS Applied Materials & Interfaces
https://www.readbyqxmd.com/read/28318084/twisted-aromatic-frameworks-readily-exfoliable-and-solution-processable-two-dimensional-conjugated-microporous-polymers
#7
A Belen Marco, Diego Cortizo-Lacalle, Iñigo Perez-Miqueo, Giovanni Valenti, Alessandro Boni, Jan Plas, Karol Strutyński, Steven De Feyter, Francesco Paolucci, Mario Montes, Andrei N Khlobystov, Manuel Melle-Franco, Aurelio Mateo-Alonso
Twisted two-dimensional aromatic frameworks have been prepared by overcrowding the nodes with bulky and rigid substituents. The highly distorted aromatic framework with alternating out-of-plane substituents results in diminished interlayer interactions that favor the exfoliation and dispersion of individual layers in organic media.
March 20, 2017: Angewandte Chemie
https://www.readbyqxmd.com/read/28317834/raman-sensitive-degradation-and-etching-dynamics-of-exfoliated-black-phosphorus
#8
Fadhel Alsaffar, Sarah Alodan, Abdul Alrasheed, Abdulrahman Alhussain, Noura Alrubaiq, Ahmad Abbas, Moh R Amer
Layered black phosphorus has drawn much attention due to the existence of a band gap compared to the widely known graphene. However, environmental stability of black phosphorus is still a major issue, which hinders the realization of practical device applications. Here, we spatially Raman map exfoliated black phosphorus using confocal fast-scanning technique at different time intervals. We observe a Raman intensity modulation for , B2g, and modes. This Raman modulation is found to be caused by optical interference, which gives insights into the oxidation mechanism...
March 20, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28316238/exfoliation-of-covalent-organic-frameworks-into-few-layer-redox-active-nanosheets-as-cathode-materials-for-lithium-ion-batteries
#9
Shan Wang, Qianyou Wang, Pengpeng Shao, Yuzhen Han, Xing Gao, Li Ma, Shuai Yuan, Xiaojie Ma, Junwen Zhou, Xiao Feng, Bo Wang
Covalent organic frameworks (COFs) have attracted growing interest by virtue of their structural diversity and tunability. Herein, we present a novel approach for the development of organic rechargeable battery cathodes in which three distinct redox-active COFs were successfully prepared and delaminated into 2D few-layer nanosheets. Compared with the pristine COFs, the exfoliated COFs with shorter Li(+) diffusion pathways allow a significant higher utilization efficiency of redox sites and faster kinetics for lithium storage...
March 21, 2017: Journal of the American Chemical Society
https://www.readbyqxmd.com/read/28316195/-analysis-of-corneal-complications-in-children-wearing-orthokeratology-lenses-at-night
#10
C X Miao, X Y Xu, H Zhang
Objective: To explore the characteristics, prognoses and corneal complications of children wearing orthokeratology lenses (Ortho-K) at night. Methods: Retrospective case analysis. A total of 113 cases (219 eyes) wore Ortho-K for myopia at night, including 7 cases with unilateral glass wear. The average age was (11.5±2.0) years old. The myopia ranged from -1.00 D to -9.00 D in all eyes and from -2.00 D to -4.00 D in 157 of them. Examinations were performed before lens wearing, at 1 hour, the next morning, 2 days, 3 days, 1 week and 2 weeks after lens wearing, and thereafter once a month...
March 11, 2017: [Zhonghua Yan Ke za Zhi] Chinese Journal of Ophthalmology
https://www.readbyqxmd.com/read/28315627/cytological-evaluation-of-the-nasal-mucosa-in-neonates-exposed-to-tobacco-smoke-during-fetal-life
#11
(no author information available yet)
OBJECTIVES: The objective of this study is to assess the cytological picture of the nasal mucosa of neonates born to mothers who are active smokers, passive smokers and non-smokers. METHODS: A prospective study was conducted in a group of 86 neonates born between 23 and 41 weeks of gestation. The assignation of neonates to one of the three aforementioned groups was based on a questionnaire concerning exposure to tobacco smoke, and on the concentration of cotinine in maternal urine...
November 19, 2016: Neuro Endocrinology Letters
https://www.readbyqxmd.com/read/28306256/enhanced-superconductivity-in-restacked-tas2-nanosheets
#12
Jie Pan, Chenguang Guo, Changsheng Song, Xiaofang Lai, Hui Li, Wei Zhao, Hui Zhang, Gang Mu, Kejun Bu, Tianquan Lin, Xiaoming Xie, Mingwei Chen, Fuqiang Huang
Since interface superconductivity was discovered at the interface between two insulating layers LaAlO3 and SrTiO3, such interface-induced superconducting systems have been a research hotspot in superconductivity. Here, we report homogeneous interfaces formed by stacking chemically exfoliated monolayer TaS2 nanosheets randomly. Enhanced superconductivity of Tc = 3 K is observed, compared with 0.8 K of parent 2H-TaS2. The measurement of heat capacity shows the increase of electronic specific-heat coefficient γ of restacked TaS2 nanosheets compared to parent 2H-TaS2 crystals...
March 23, 2017: Journal of the American Chemical Society
https://www.readbyqxmd.com/read/28306244/recent-advances-in-ultrathin-two-dimensional-nanomaterials
#13
Chaoliang Tan, Xiehong Cao, Xue-Jun Wu, Qiyuan He, Jian Yang, Xiao Zhang, Junze Chen, Wei Zhao, Shikui Han, Gwang-Hyeon Nam, Melinda Sindoro, Hua Zhang
Since the discovery of mechanically exfoliated graphene in 2004, research on ultrathin two-dimensional (2D) nanomaterials has grown exponentially in the fields of condensed matter physics, material science, chemistry, and nanotechnology. Highlighting their compelling physical, chemical, electronic, and optical properties, as well as their various potential applications, in this Review, we summarize the state-of-art progress on the ultrathin 2D nanomaterials with a particular emphasis on their recent advances...
March 17, 2017: Chemical Reviews
https://www.readbyqxmd.com/read/28303716/simple-chemical-treatment-to-n-dope-transition-metal-dichalcogenides-and-enhance-the-optical-and-electrical-characteristics
#14
Guru P Neupane, Minh Dao Tran, Seok Joon Yun, Hyun Kim, Changwon Seo, Jubok Lee, Gang Hee Han, Ajay K Sood, Jeongyong Kim
Optical and electrical properties of monolayer transition-metal dichalcogenides (1L-TMDs) are critically influenced by two dimensionally confined exciton complexes. While extensive studies on controlling optical properties of 1L-TMDs through external doping or defect engineering have been carried out, the effects of excess charges, defects and the populations of exciton complexes on the light emission of 1L-TMDs are not yet fully understood. Here we present a simple chemical treatment method to n-dope 1L-TMDs that also enhances their optical and electrical properties...
March 17, 2017: ACS Applied Materials & Interfaces
https://www.readbyqxmd.com/read/28303604/in-vivo-cleansing-efficacy-of-biodegradable-exfoliating-beads-assessed-by-skin-bioengineering-techniques
#15
J Kitsongsermthon, K Duangweang, J Kreepoke, A Tansirikongkol
BACKGROUND/PURPOSE: The plastic microbeads, used in many cleansers, will be banned in cosmetic and personal care products within 2017 since they are non-degradable and can disturb the living organisms in water reservoirs. Various choices of biodegradable beads are commercially available, but their efficacy has not been proven yet. This study aimed to compare the cleansing efficacy in dirt and sebum removal aspects of three types of exfoliating beads. METHODS: The gel scrubs with polyethylene (PE) beads, mannan beads or wax beads, were formulated and evaluated for their stability...
March 16, 2017: Skin Research and Technology
https://www.readbyqxmd.com/read/28301333/a-new-micromechanical-approach-for-the-preparation-of-graphene-nanoplatelets-deposited-on-polyethylene
#16
Ubaldo Coscia, Mariano Palomba, Giuseppina Ambrosone, Gianni Barucca, Marcello Cabibbo, Paolo Mengucci, Riccardo de Asmundis, Gianfranco Carotenuto
An advantageous micromechanical technique to deposit large area graphene nanoplatelet thin films on low density polyethylene substrate is proposed. This method is based on the application of shear stress and friction forces to a graphite platelets/ethanol paste on the surface of a polymeric substrate and it allows to obtain a continuous film of superimposed nanoplatelets mainly made of 13-30 graphene layers. X-ray diffraction, atomic force and transmission electron microscopy measurements support the occurrence of a partial exfoliation of the graphite platelets due to shear stress and friction forces applied during film formation...
March 16, 2017: Nanotechnology
https://www.readbyqxmd.com/read/28301331/electrical-and-photovoltaic-properties-of-residue-free-mos2-thin-films-by-liquid-exfoliation-method
#17
Seung Kyo Lee, Dongil Chu, Da Ye Song, Sang Woo Pak, Eun Kyu Kim
Molybdenum disulphide (MoS2) film fabricated by a liquid exfoliation method has a large potential on various applications because of its various advantages in mass production and low temperature process. In this study, residue-free MoS2 thin films were formed during the liquid exfoliation process and their electrical properties were characterized with interdigitated electrode. Then, MoS2 film thickness could be controlled by centrifuge condition in the range of 20~40 nm, and its carrier concentration and mobility were measured about 7...
March 16, 2017: Nanotechnology
https://www.readbyqxmd.com/read/28297708/ultra-selective-high-flux-membranes-from-directly-synthesized-zeolite-nanosheets
#18
Mi Young Jeon, Donghun Kim, Prashant Kumar, Pyung Soo Lee, Neel Rangnekar, Peng Bai, Meera Shete, Bahman Elyassi, Han Seung Lee, Katabathini Narasimharao, Sulaiman Nasir Basahel, Shaeel Al-Thabaiti, Wenqian Xu, Hong Je Cho, Evgenii O Fetisov, Raghuram Thyagarajan, Robert F DeJaco, Wei Fan, K Andre Mkhoyan, J Ilja Siepmann, Michael Tsapatsis
A zeolite with structure type MFI is an aluminosilicate or silicate material that has a three-dimensionally connected pore network, which enables molecular recognition in the size range 0.5-0.6 nm. These micropore dimensions are relevant for many valuable chemical intermediates, and therefore MFI-type zeolites are widely used in the chemical industry as selective catalysts or adsorbents. As with all zeolites, strategies to tailor them for specific applications include controlling their crystal size and shape...
March 15, 2017: Nature
https://www.readbyqxmd.com/read/28296547/analysis-of-silver-binding-nucleolar-organizer-regions-in-exfoliative-cytology-smears-of-potentially-malignant-and-malignant-oral-lesions
#19
G V Sowmya, P Nahar, M Astekar, H Agarwal, M P Singh
Nucleolar organizer regions are nucleolar components that contain proteins that are stained selectively by silver methods; they can be identified as black dots throughout the nucleolus and are known as silver binding nucleolar organizer regions (AgNOR). The number of AgNOR is related to the cell cycle and the proliferative activity of the cells. We investigated AgNOR using exfoliative cytology smears of potentially malignant oral lesions. Eighty individuals were divided into four equal groups: healthy controls, oral leukoplakia, oral submucous fibrosis and oral squamous cell carcinoma...
2017: Biotechnic & Histochemistry: Official Publication of the Biological Stain Commission
https://www.readbyqxmd.com/read/28296246/assessment-of-oral-cytological-features-in-smokers-and-nonsmokers-after-application-of-toluidine-blue
#20
Majid Sharbatdaran, Hamid Abbaszadeh, Sepideh Siadati, Mohammad Ranaee, Karimollah Hajian-Tilaki, Mahdieh Rajabi-Moghaddam
INTRODUCTION: Smoking is the most important etiologic factor of oral cancer. Exfoliative cytology is the best method for early detection of oral cancer. Toluidine blue staining is used for detection of oral premalignant and malignant lesions. The aim of this study was to enhance the accuracy of oral exfoliative cytology in evaluating dysplastic features using toluidine blue staining. METHODS AND MATERIALS: This clinical trials study was performed on 60 male smokers and nonsmokers without clinically oral lesion...
March 10, 2017: Diagnostic Cytopathology
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