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https://www.readbyqxmd.com/read/28822152/-preparation-of-cd123-mono-antibody-modified-tanshinone-%C3%A2-a-loaded-immunoliposome-and-its-in-vitro-evaluation
#1
Yin Wang, Fu-Rong Liu, Hong-Lin Xiang, Hong Qing, Chen Chen, Sheng-Jun Mao, Hui Li
In the study, we developed a novel formulation, CD123 mono-antibody (mAb) modified tanshinone ⅡA loaded immunoliposome (CD123-TanⅡA-ILP) to achieve the targeted drug delivery for leukemia cells. Orthogonal test was used to optimize liposome preparation, and the TanⅡA-loaded PEGylated liposomes (TanⅡA-LP) of S100PC-Chol-(mPEG2000-DSPE)-TanⅡA at 19∶5∶1∶1 molar ratio were prepared by the thin film hydration-probe ultrasonic method. A post-insertion method was applied to prepare CD123-TanⅡA-ILP via thiolated mAb conjugated to the terminal of maleimide-PEG2000-DSPE...
June 2017: Zhongguo Zhong Yao za Zhi, Zhongguo Zhongyao Zazhi, China Journal of Chinese Materia Medica
https://www.readbyqxmd.com/read/28821045/production-of-cellulose-nanofibers-using-phenolic-enhanced-surface-oxidation
#2
Iman Beheshti Tabar, Ximing Zhang, Jeffrey P Youngblood, Nathan S Mosier
In this study we demonstrate that lignin monomers formed as byproducts of pulping or bioprocessing of lignocellulosic biomass is an effective enhancer to oxidize cellulose surfaces with ozone for the production of cellulose nanofibers (CNF). Never dried softwood pulp with minimum mercerization was enzymatically treated leading to a homogeneous pulp slurry with a higher reactivity. The slurry was oxidized by ozone gas in the presence of syringic acid, a lignin degradation model compound, as an oxidation enhancer at room temperature and pH 11...
October 15, 2017: Carbohydrate Polymers
https://www.readbyqxmd.com/read/28821043/effect-of-moderate-electric-fields-in-the-properties-of-starch-and-chitosan-films-reinforced-with-microcrystalline-cellulose
#3
Caroline C S Coelho, Miguel A Cerqueira, Ricardo N Pereira, Lorenzo M Pastrana, Otniel Freitas-Silva, António A Vicente, Lourdes M C Cabral, José A Teixeira
Microcrystalline cellulose (MCC) can provide improved properties when the aim is the development of biodegradable packaging materials. In this work the physicochemical properties of polysaccharide-based films (chitosan and starch) with the incorporation of MCC and the application of moderate electric field (MEF) and ultrasonic bath (UB) as treatments, were evaluated. For each treatment, the thickness, moisture content, solubility, water vapor permeability, contact angle, mechanical properties, along with its color and opacity were determined...
October 15, 2017: Carbohydrate Polymers
https://www.readbyqxmd.com/read/28820321/non-surgical-therapy-reduces-presence-of-jp2-clone-in-localized-aggressive-periodontitis
#4
Danielle K Burgess, Hong Huang, Peter Harrison, Theodora Kompotiati, Ikramuddin Aukhil, Luciana M Shaddox
BACKGROUND: Previous studies have provided substantial evidence on the association of Aggregatibacter actinomycetemcomitans (Aa), and its highly leukotoxic JP2 genotype, with localized aggressive periodontitis (LAP). The present study aims to evaluate the presence of JP2 in LAP individuals following periodontal treatment. METHODS: Sixty African American LAP patients between ages 5 and 25 years were examined. At baseline, pocket depth (PD), clinical attachment level (CAL), bleeding on probing (BoP) and plaque index were measured and subgingival plaque was collected from both LAP diseased sites and healthy sites for each participant...
August 18, 2017: Journal of Periodontology
https://www.readbyqxmd.com/read/28818772/multipath-ultrasonic-gas-flow-meter-based-on-multiple-reference-waves
#5
Hongliang Zhou, Tao Ji, Ruichen Wang, Xiaocheng Ge, Xiaoyu Tang, Shizhen Tang
Several technologies can be used in ultrasonic gas flow-meters, such as transit-time, Doppler, cross-correlation and etc. In applications, the approach based on measuring transit-time has demonstrated its advantages and become more popular. Among those techniques which can be applied to determine time-of-flight (TOF) of ultrasonic waves, including threshold detection, cross correlation algorithm and other digital signal processing algorithms, cross correlation algorithm has more advantages when the received ultrasonic signal is severely disturbed by the noise...
July 18, 2017: Ultrasonics
https://www.readbyqxmd.com/read/28817984/study-on-optimizing-dyeing-of-cotton-using-date-pits-extract-as-a-combined-source-of-coloring-matter-and-bio-mordant
#6
Ahlem Guesmi, Naoufel Ben Hamadi
In this research, extraction of colouring matter from date pits powder was conferred by conventional and ultrasonic methods. Phenolic compounds present in the resulted extract were identified by HPLC analysis. Total phenolic, total flavonoid and total metallic contents were quantified; and the highest levels were obtained in case of ultrasonic extraction process at a frequency of 25 kHz. The different resultant extracts were diluted with distilled water and unified to a polyphenolic content of 48 mg per 100 mL...
August 18, 2017: Natural Product Research
https://www.readbyqxmd.com/read/28816818/reproducibility-of-central-corneal-thickness-measurements-in-healthy-and-glaucomatous-eyes
#7
Tony Realini, Matthew J Gurka, Robert N Weinreb
PURPOSE: The purpose of this study is to characterize intraday and interday variation in central corneal thickness (CCT) in healthy and glaucomatous subjects. METHODS: In this prospective cohort study, 40 healthy subjects and 42 subjects with primary open-angle glaucoma underwent CCT measurements by ultrasonic pachymetry on 5 days over 1 year: first at baseline, then at 1 week and 1, 6, and 12 months after baseline. On 1visit, CCT was measured every 2 hours from 08:00 to 20:00...
August 14, 2017: Journal of Glaucoma
https://www.readbyqxmd.com/read/28816660/erratum-a-200-1380-khz-quadrifrequency-focused-ultrasound-transducer-for-neurostimulation-in-rodents-and-primates-transcranial-in-vitro-calibration-and-numerical-study-of-the-influence-of-skull-cavity
#8
Charlotte Constans, Thomas Deffieux, Pierre Pouget, Mickael Tanter, Jean-Francois Aubry
Presents correction in the paper "A 200 - 1380 kHz Quadrifrequency Focused Ultrasound Transducer For Neurostimulation In Rodents And Primates: Transcranial In Vitro Calibration And Numerical Study Of The Influence Of Skull Cavity", IEEE transactions on ultrasonics, ferroelectrics, and frequency control, 2017, vol. 64, no 4, p. 717-724.
August 14, 2017: IEEE Transactions on Ultrasonics, Ferroelectrics, and Frequency Control
https://www.readbyqxmd.com/read/28816322/ultrasonication-enhanced-gelation-properties-of-a-versatile-amphiphilic-formamidine-based-gelator-exhibiting-both-organogelation-and-hydrogelation-abilities
#9
Jürgen Bachl, Diego Sampedro, Judith Mayr, David Díaz Díaz
We describe the preparation of a novel amphiphilic gelator built from a formamidine core, which is able to form a variety of physical organogels and hydrogels at concentrations ranging from 15 to 150 mg mL(-1). Interestingly, ultrasound treatment of isotropic solutions (i.e., gel-precursor) resulted in a remarkable enhancement of the gelation kinetics as well as the gelation scope and characteristic gel properties (e.g., critical gelation concentration, gel-to-sol transition temperature, viscoelastic moduli) in comparison to the heating-cooling protocol typically used to obtain supramolecular gels...
August 17, 2017: Physical Chemistry Chemical Physics: PCCP
https://www.readbyqxmd.com/read/28816292/-precision-of-three-dimensional-printed-brackets
#10
D Zhang, L C Wang, Y H Zhou, X M Liu, J Li
OBJECTIVE: This study was based on digital orthodontic diagnosis work flow for indirect bonding transfer tray model design and three-dimensional (3D) printing, and the aim of this paper was to inspect the dimensional accuracyof 3D printed brackets, which is the foundation of the follow up work and hoped that will illuminate the clinical application of the digital orthodontics work flow. METHODS: The samples which consisted of 14 cases of patients with malocclusion from Department of Orthodontics Peking University were selected, including 8 cases with tooth extraction and 6 cases without tooth extraction...
August 18, 2017: Beijing da Xue Xue Bao. Yi Xue Ban, Journal of Peking University. Health Sciences
https://www.readbyqxmd.com/read/28813956/semi-autonomous-mobility-assistance-for-power-wheelchair-users-navigating-crowded-environments
#11
Daniel Ashley, Kyle Ashley, Redwan Alqasemi, Rajiv Dubey
Power wheelchair users suffering from cognitive or physical impairment often face difficulties in maneuvering their wheelchairs through crowded environments. Currently, users need to be continuously aware of all traffic around them to actively avoid all collisions. This is an especially difficult task since many wheelchair users are unable to accurately view or perceive their surroundings. Additionally, imprecise joystick control, slowed reaction time, or imperfect interpretation of the environment can lead to unintended collisions with objects in the environment...
July 2017: IEEE ... International Conference on Rehabilitation Robotics: [proceedings]
https://www.readbyqxmd.com/read/28813040/enhanced-selectivity-of-methane-production-for-photocatalytic-reduction-by-the-piezoelectric-effect
#12
Kaiqiang Wang, Zhibin Fang, Xueyan Huang, Wenhui Feng, Yaozhu Wang, Bo Wang, Ping Liu
Under simultaneous full arc light and ultrasonic irradiation, photo-generated electrons are brought together by piezoelectric potential, and thus dense electrons induce the reduction of carbon dioxide on the surface of piezoelectric semiconductors, resulting in an improved selectivity of methane production to a greater degree.
August 16, 2017: Chemical Communications: Chem Comm
https://www.readbyqxmd.com/read/28812873/ultrathin-manganese-based-metal-organic-framework-nanosheets-low-cost-and-energy-dense-lithium-storage-anodes-with-the-coexistence-of-metal-and-ligand-redox-activities
#13
Chao Li, Xiaoshi Hu, Wei Tong, Wensheng Yan, Xiaobing Lou, Ming Shen, Bingwen Hu
We herein demonstrate the fabrication of Mn- and Ni-based ultrathin metal-organic framework nanosheets with the same coordination mode (defined as 'Mn-UMOFNs' and 'Ni-UMOFNs', respectively) through an expedient and versatile ultrasonic approach, and scrutinize their electrochemical properties as anode materials for rechargeable lithium battery for the first time. The obtained Mn-UMOFNs with structure advantages over Ni-UMOFNs (thinner nanosheets, smaller metal-ion radius, higher specific surface area) exhibit high reversible capacity (1187 mAh g-1 at 100 mA g-1 for 100 cycles), excellent rate capability (701 mAh g-1 even at 2 A g-1), rapid Li+ diffusion coefficient (2...
August 16, 2017: ACS Applied Materials & Interfaces
https://www.readbyqxmd.com/read/28812244/fabrication-of-ordered-nanopattern-by-using-abc-triblock-copolymer-with-salt-in-toluene
#14
Hailiang Huang, Benbin Zhong, Xihong Zu, Hongsheng Luo, Wenjing Lin, Minghai Zhang, Yazhou Zhong, Guobin Yi
Ordered nanopatterns of triblock copolymer polystyrene-block-poly(2-vinylpyridine)-block- poly (ethylene oxide)(PS-b-P2VP-b-PEO) have been achieved by the addition of lithium chloride (LiCl). The morphological and structural evolution of PS-b-P2VP-b-PEO/LiCl thin films were systematically investigated by varying different experimental parameters, including the treatment for polymer solution after the addition of LiCl, the time scale of ultrasonic treatment and the molar ratio of Li(+) ions to the total number of oxygen atoms (O) in PEO block and the nitrogen atoms (N) in P2VP block...
August 15, 2017: Nanoscale Research Letters
https://www.readbyqxmd.com/read/28812139/groin-hernia-diagnostics-dynamic-inguinal-ultrasound-dius
#15
Henning Niebuhr, Anita König, Maciej Pawlak, Marco Sailer, Ferdinand Köckerling, Wolfgang Reinpold
PURPOSE: Although clinical examination is the gold standard for the diagnosis of groin hernia, imaging procedures can improve the detection of femoral hernias, incipient hernias, and less-common types of hernias (e.g., an obturator hernia). The aim of this study is to evaluate the sensitivity and specificity of dynamic inguinal ultrasound (DIUS). MATERIALS AND METHODS: Between July 2010 and June 2015, 4951 clinical and ultrasound examinations of the groin area were conducted at the Hanse-Hernienzentrum in Hamburg, Germany...
August 15, 2017: Langenbeck's Archives of Surgery
https://www.readbyqxmd.com/read/28811166/biomechanical-implications-of-cortical-elastic-properties-of-the-macaque-mandible
#16
Paul C Dechow, Olga Panagiotopoulou, Poorva Gharpure
Knowledge of the variation in the elastic properties of mandibular cortical bone is essential for modeling bone function. Our aim was to characterize the elastic properties of rhesus macaque mandibular cortical bone and compare these to the elastic properties from mandibles of dentate humans and baboons. Thirty cylindrical samples were harvested from each of six adult female rhesus monkey mandibles. Assuming orthotropy, axes of maximum stiffness in the plane of the cortical plate were derived from ultrasound velocity measurements...
June 17, 2017: Zoology: Analysis of Complex Systems, ZACS
https://www.readbyqxmd.com/read/28811130/comparative-study-on-stabilizing-ability-of-food-protein-non-ionic-surfactant-and-anionic-surfactant-on-bcs-type-ii-drug-carvedilol-loaded-nanosuspension-physicochemical-and-pharmacokinetic-investigation
#17
Tianjiao Geng, Parikshit Banerjee, Zhangdi Lu, Abdelmoumin Zoghbi, Tiantian Li, Bo Wang
Carvedilol (CAR) in its pure state has low aqueous solubility and extremely poor bioavailability which largely limit its clinical application. The aim of the study is to improve the dissolution rate and the bioavailability of CAR via preparing nanosuspensions with different stabilizers. Antisolvent precipitation-ultrasonication technique was used here. Attempts have been made to use food protein- Whey protein isolate (WPI) as a stabilizer in CAR loaded nanosuspension and also to compare its stabilizing potential with conventional nanosuspension stabilizers such as non-ionic linear copolymer-poloxamer 188 (PLX188) and anionic surfactant-sodium dodecyl sulfate (SDS)...
August 12, 2017: European Journal of Pharmaceutical Sciences
https://www.readbyqxmd.com/read/28810592/protective-effect-and-mechanism-of-estrogen-receptor-%C3%AE-on-myocardial-infarction-in-mice
#18
Jun-Biao Zhang, Chang-Lei Guo
The protective effect and the mechanism of estrogen receptor β (ERβ) on myocardial infarction (MI) in mice were explored. A total of 12 female Tg-ERβ transgenic mice and 12 non-transgenic littermate control (NLC) wild-type C57 mice were used for the present study. Both transgenic and wild-type mice had similar baseline data such as age, sex, and weight. The mouse model of MI was established by coronary artery ligation method, and the cardiac structure and function changes of the mouse were observed by ultrasonic echocardiography on days 1, 3 and 7 after the operation...
August 2017: Experimental and Therapeutic Medicine
https://www.readbyqxmd.com/read/28810179/utility-of-ultrasound-assisted-cloud-point-extraction-and-spectophotometry-as-a-preconcentration-and-determination-tool-for-the-sensitive-quantification-of-mercury-species-in-fish-samples
#19
Nail Altunay
The current study reports, for the first time, the development of a new analytical method employing ultrasound assisted-cloud point extraction (UA-CPE) for the extraction of CH3Hg(+) and Hg(2+) species from fish samples. Detection and quantification of mercury species were performed at 550nm by spectrophotometry. The analytical variables affecting complex formation and extraction efficiency were extensively evaluated and optimized by univariate method. Due to behave 14-fold more sensitive and selective of thiophene 2,5-dicarboxylic acid (H2TDC) to Hg(2+) ions than CH3Hg(+) in presence of mixed surfactant, Tween 20 and SDS at pH5...
August 10, 2017: Spectrochimica Acta. Part A, Molecular and Biomolecular Spectroscopy
https://www.readbyqxmd.com/read/28809780/fenton-discoloration-of-ultrasonicated-purple-cactus-pear-juice
#20
Isidro Reyes-Hernández, Nelly Del S Cruz-Cansino, Ingrid Renata Santander-Martínez, Ernesto Alanís-García, Luis Delgado-Olivares, Esther Ramírez-Moreno, José A Ariza-Ortega, Ariana Omaña-Covarrubias, Jesús Martín Torres-Valencia, José de Jesús Manríquez-Torres
The aim of this study was to evaluate the stability of color, betaxanthin, and betacyanin pigments in the presence of Cu(II)-dependent hydroxyl radicals (HO•) from ultrasonicated purple cactus pear juice at amplitudes of 40%, 60%, and 80%, in comparison to untreated sample. L* parameter of juice treated at 40% and 80% amplitude for 25 and 15 min, respectively (11.3 and 9.3, respectively), were significantly higher compared to the control; b* and hue parameters of juice treated at 80%, 25 min showed values of 1...
August 15, 2017: Molecules: a Journal of Synthetic Chemistry and Natural Product Chemistry
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