keyword
MENU ▼
Read by QxMD icon Read
search

Methylene blue

keyword
https://www.readbyqxmd.com/read/28922460/a-raman-spectroscopic-investigation-of-the-mechanism-of-the-reduction-of-hair-with-thioglycerol-and-the-accompanying-disulfide-conformational-changes
#1
A Kuzuhara
OBJECTIVE: The objective of our research was to investigate the reduction mechanism of thioglycerol (TG) on hair keratin fibres. METHODS: The structure of cross-sections at various depths of virgin white human hair resulting from the permanent waving process with TG was directly analyzed at the molecular level using Raman spectroscopy. Also, the penetration of TG for the cross-sectional samples dyed with methylene blue was observed by optical microscopy. RESULTS: The gauche-gauche-gauche (GGG) and gauche-gauche-trans (GGT) conformations of disulfide (-SS-) groups remarkably decreased, while the trans-gauche-trans (TGT) conformation increased by performing the reduction process with TG...
September 18, 2017: International Journal of Cosmetic Science
https://www.readbyqxmd.com/read/28919093/clip-closure-and-division-instead-of-stapling-for-the-last-small-gastric-bridge-between-gastric-pouch-and-remnant-stomach-in-laparoscopic-roux-en-y-gastric-bypass
#2
Adem Yuksel, Fatih Sumer, Cuneyt Kayaalp
INTRODUCTION: Here, a modification during gastric pouch forming was implemented in laparoscopic Roux-en-Y gastric bypass (LRYGB). We aimed to examine the feasibility of metallic clip closure for the remaining small stomach bridges (<1 cm) between the pouch and the remnant stomach. METHODS: During pouch creation, after the last stapler firing, the remaining small bridge was closed with clips and divided instead of using a new stapler. Metallic clips for this aim were used in 41 of 520 LRYGP between September 2010 and January 2017...
September 14, 2017: International Journal of Surgery
https://www.readbyqxmd.com/read/28917889/fabrication-of-cellulose-nanocrystal-from-carex-meyeriana-kunth-and-its-application-in-the-adsorption-of-methylene-blue
#3
Xue Yang, Hui Liu, Fuyi Han, Shuai Jiang, Lifang Liu, Zhaopeng Xia
Cellulose nanocrystal (CNC) was extracted from Carex meyeriana Kunth (CMK) by a combination of TEMPO oxidation and mechanical homogenization method, and used to remove methylene blue (MB) from aqueous solution. After alkali-oxygen treatment, the aqueous biphasic system (polyethylene glycol/inorganic salt) was applied to further remove lignin from CMK. The characteriazation of CNC, and the effects of H2O2 dosage, CNC dosage, adsorption time, and initial MB concentration on the MB removal capacity of CNC were investigated...
November 1, 2017: Carbohydrate Polymers
https://www.readbyqxmd.com/read/28917799/a-reagentless-and-reusable-electrochemical-aptamer-based-sensor-for-rapid-detection-of-ampicillin-in-complex-samples
#4
Zhi-Gang Yu, Rebecca Y Lai
We report the design and fabrication of a "signal-on" electrochemical aptamer-based (E-AB) sensor for detection of ampicillin. The signaling of the sensor is based on target binding-induced changes in the conformation and flexibility of the methylene blue-modified aptamer probe. The sensor's response is fast; signal saturation can be reached in ~ 200s. Since all the sensor components are surface-immobilized, it is regenerable and can be reused for at least three times. It has demonstrated good specificity and is capable of differentiating between ampicillin and structurally similar antibiotics such as amoxicillin...
January 1, 2018: Talanta
https://www.readbyqxmd.com/read/28917099/a-versatile-bio-based-material-for-efficiently-removing-toxic-dyes-heavy-metal-ions-and-emulsified-oil-droplets-from-water-simultaneously
#5
Daikun Li, Qing Li, Daoyong Mao, Ningning Bai, Hongzhou Dong
Developing versatile materials for effective water purification is significant for environment and water source protection. Herein, a versatile bio-based material (CH-PAA-T) was reported by simple thermal cross-linking chitosan and polyacrylic acid which exhibits excellent performances for removing insoluble oil, soluble toxic dyes and heavy metal ions from water, simultaneously. The adsorption capacities are 990.1mgg(-1) for methylene blue (MB) and 135.9mgg(-1) for Cu(2+), which are higher than most of present advanced absorbents...
September 5, 2017: Bioresource Technology
https://www.readbyqxmd.com/read/28915482/nickel-nanoparticles-encapsulated-in-porous-carbon-and-carbon-nanotube-hybrids-from-bimetallic-metal-organic-frameworks-for-highly-efficient-adsorption-of-dyes
#6
Lina Jin, Xiaoshuang Zhao, Xinye Qian, Mingdong Dong
Nickel nanoparticles encapsulated in porous carbon/carbon nanotube hybrids (Ni/PC-CNT) were successfully prepared by a facile carbonization process using Ni/Zn-MOF as the precursor. Distinct from previous studies, Ni/Zn-MOF precursors were prepared via a direct precipitation method at room temperature for only 5min. After the carbonization, magnetic Ni nanoparticles were well embedded in the porous carbon and carbon nanotube. The obtained Ni/PC-CNT composites had a high surface area (999m(2) g(-1)), large pore volume (0...
September 6, 2017: Journal of Colloid and Interface Science
https://www.readbyqxmd.com/read/28910592/optimization-of-process-condition-for-the-preparation-of-amine-impregnated-activated-carbon-developed-for-co2-capture-and-applied-to-methylene-blue-adsorption-by-response-surface-methodology
#7
Dipa Das, Bhim C Meikap
The present research describes the optimal adsorption condition for methylene blue (MB). The adsorbent used here was monoethanol amine-impregnated activated carbon (MEA-AC) prepared from green coconut shell. Response surface methodology (RSM) is the multivariate statistical technique used for the optimization of the process variables. The central composite design is used to determine the effect of activation temperature, activation time and impregnation ratio on the MB removal. The percentage (%) MB adsorption by MEA-AC is evaluated as a response of the system...
September 14, 2017: Journal of Environmental Science and Health. Part A, Toxic/hazardous Substances & Environmental Engineering
https://www.readbyqxmd.com/read/28904926/toxic-brain-injury-with-nitrobenzene-poisoning
#8
Akshay Kumar, Chintan Bhavsar, Praveen Aggarwal, Nayer Jamshed
Acute methemoglobinemia secondary to nitrobenzene ingestion is a rare but well-known clinical entity. It is extremely important to identify such patients as rapid and effective management with methylene blue and other supportive measures will often save these lives. We present a rare and unfortunate case of a girl who developed acute toxic brain injury following nitrobenzene ingestion and succumbed.
July 2017: International Journal of Applied and Basic Medical Research
https://www.readbyqxmd.com/read/28901567/do-penile-haemodynamics-change-in-the-presence-of-hydrogen-sulphide-h2-s-donor-in-metabolic-syndrome-induced-erectile-dysfunction
#9
E Dayar, E Kara, G Yetik-Anacak, N Hocaoglu, O Bozkurt, S Gidener, N Durmus
Erectile dysfunction (ED) is defined in relation to the metabolic syndrome (metS). Hydrogen sulphide (H2 S), a gasotransmitter, has been revealed to get involved in hypertension, insulin secretion and regulation of vascular tone especially in erectile physiology. This study aimed to investigate the effect of H2 S on metS-induced ED. Animals were divided into two groups as control and metS, which were fed with standard diet or 60% high-fructose diet for 10 weeks respectively. The metS model was evaluated with biochemical analyses, waist circumference/tibia length ratio and HOMA index...
September 13, 2017: Andrologia
https://www.readbyqxmd.com/read/28898922/cold-versus-hot-endoscopic-mucosal-resection-for-nonpedunculated-colorectal-polyps-sized-6-10-mm-a-randomized-trial
#10
Vasilios Papastergiou, Konstantina D Paraskeva, Maria Fragaki, Ioannis Dimas, Emmanouil Vardas, Angeliki Theodoropoulou, Nicoletta Mathou, Athanasios Giannakopoulos, Konstantinos Karmiris, Afroditi Mpitouli, Dimitra Apessou, Linda Giannikaki, John A Karagiannis, Grigorios Chlouverakis, Gregorios A Paspatis
Background and study aims Cold snare polypectomy is an established method for the resection of small colorectal polyps; however, significant incomplete resection rates still leave room for improvement. We aimed to assess the efficacy of cold snare endoscopic mucosal resection (CS-EMR), compared with hot snare endoscopic mucosal resection (HS-EMR), for nonpedunculated polyps sized 6 - 10 mm. Patients and methods This study was a dual-center, randomized, noninferiority trial. Consecutive adult patients with at least one nonpedunculated polyp sized 6 - 10 mm were enrolled...
September 12, 2017: Endoscopy
https://www.readbyqxmd.com/read/28895060/cerebral-tissue-oxidative-ischemia-reperfusion-injury-in-connection-with-experimental-cardiac-arrest-and-cardiopulmonary-resuscitation-effect-of-mild-hypothermia-and-methylene-blue
#11
Lars Wiklund, Ranjana Patnaik, Aruna Sharma, Adriana Miclescu, Hari S Sharma
The present investigation is an expansion of previous studies which all share a basic experimental protocol of a porcine-induced cardiac arrest (CA) of 12 min followed by 8 min of cardiopulmonary resuscitation (CPR), different experimental treatments (immediate as well as postponed induced mild hypothermia and administration of much or less cool intravenous fluids), and a follow-up period of 3 h after which the animals were sacrificed. Another group of animals was studied according to the same protocol after 12-min CA and "standard CPR...
September 11, 2017: Molecular Neurobiology
https://www.readbyqxmd.com/read/28894786/methylene-blue-effectiveness-as-local-analgesic-after-anorectal-surgery-a-literature-review
#12
REVIEW
Dewi Fransiska, Wifanto Saditya Jeo, Yefta Moenadjat, Dewi Friska
BACKGROUND: Methylene blue (MB) has been found to have unique analgesic property through temporary disruption of sensory nerve conduction. In anorectal surgery, MB is widely used as a biologic stain but the analgesic effect has never been studied. Thus, a literature review completed with critical appraisal is required to find out its efficacy. METHODS: A review has been run to find out its efficacy. Literature search proceeded in database sites, namely, PubMed, EBSCO, Cochrane, Wiley, and ProQuest using the following keywords: "anorectal" OR "hemorrhoid" OR "anal fistula" OR "anal fissure" OR "anal abscess" OR "anal pruritus" AND "methylene blue" AND "analgesic"; then the critical appraisal and its implication were discussed...
2017: Advances in Medicine
https://www.readbyqxmd.com/read/28890612/comparative-evaluation-of-sealing-ability-water-absorption-and-solubility-of-three-temporary-restorative-materials-an-in-vitro-study
#13
A R Prabhakar, N Shantha Rani, Saraswathi V Naik
BACKGROUND: The quality of the coronal seal of root canal filling material is important for periapical health. Absorption of water or saliva by the temporary restorative materials leads to dimensional changes, loss of retention, staining and breaking in margin contours. Hence this study was carried out to evaluate and compare the sealing properties, water absorption and solubility of IRM (intermediate restorative material), Cavit G and GC Caviton. STUDY DESIGN: Experimental, in vitro intergroup randomized control trial...
April 2017: International Journal of Clinical Pediatric Dentistry
https://www.readbyqxmd.com/read/28890608/coronal-sealing-capacity-of-temporary-restorative-materials-in-pediatric-dentistry-a-comparative-study
#14
Shabnam Milani, Bahman Seraj, Alireza Heidari, Atousa Mirdamadi, Mahdi Shahrabi
AIMS: The aim of this in vitro study is to compare the coronal microleakage of three common temporary restorative materials, namely Coltosol, Compoglass, and Zonalin, used in pediatric dentistry after endodontic treatment at different time intervals (1 week, 1, and 2 months) using dye penetration. MATERIALS AND METHODS: Access cavities were prepared in 72 intact extracted premolar teeth. The samples were divided into three groups (n = 24) and filled with Coltosol, Compoglass, or Zonalin...
April 2017: International Journal of Clinical Pediatric Dentistry
https://www.readbyqxmd.com/read/28888189/a-new-three-dimensional-bis-benzimidazole-based-cadmium-ii-coordination-polymer
#15
Shao Yun Hao, Suo Xia Hou, Zeng Chuan Hao, Guang Hua Cui
A new coordination polymer (CP), formulated as [Cd(L)(DCTP)]n (1) (L=1,1'-(1,4-butanediyl)bis(2-methylbenzimidazole), H2DCTP=2,5-dichloroterephthalic acid), was synthesized under hydrothermal conditions and the performance as luminescent probe was also investigated. Single-crystal X-ray diffraction reveals CP 1 is a 3D 3-fold interpenetrated dia network with large well-defined pores. It is found that CP 1 revealed highly sensitive luminescence sensing for Fe(3+) ions in acetonitrile solution with a high quenching efficiency of KSV=2541...
September 5, 2017: Spectrochimica Acta. Part A, Molecular and Biomolecular Spectroscopy
https://www.readbyqxmd.com/read/28885629/urea-glass-preparation-of-titanium-niobium-nitrides-and-subsequent-oxidation-to-photoactive-titanium-niobium-oxynitrides
#16
James J Brancho, Aaron D Proctor, Shobhana Panuganti, Bart M Bartlett
Titanium niobium oxynitrides (TiNbON) are an attractive category of potential photocatalysts, but strategies for preparing them remain limited. We adapt the wet chemical "urea glass" method for pure transition metal nitrides to single-phase mixed-metal titanium niobium nitrides for a range of niobium mole fractions. We then oxidize the nitrides by heating in air to prepare titanium niobium oxynitride that absorbs visible light of λ ≤ 550 nm. The materials are characterized by powder X-ray diffraction, scanning electron microscopy, and diffuse reflectance UV-vis spectroscopy...
September 8, 2017: Dalton Transactions: An International Journal of Inorganic Chemistry
https://www.readbyqxmd.com/read/28884066/actinomycetes-mediated-synthesis-of-gold-nanoparticles-from-the-culture-supernatant-of-streptomyces-griseoruber-with-special-reference-to-catalytic-activity
#17
V R Ranjitha, V Ravishankar Rai
Biogenic synthesis of nanoparticles has received a tremendous attention from the past few decades. The significant progress in the field of nanotechnology has resulted in a cost-effective and eco-friendly process for nanoparticle synthesis. In the present study, the extracellular synthesis of gold nanoparticles was carried out using culture supernatant of Streptomyces griseoruber, actinomycetes isolated from the soil. Bioreduction of gold nanoparticles was confirmed by UV-visible spectrophotometer that showed the peak between 520 and 550 nm...
October 2017: 3 Biotech
https://www.readbyqxmd.com/read/28881420/lethal-effect-of-photodynamic-treatment-on-persister-bacteria
#18
Oscar Juan Oppezzo, Ana Florencia Forte Giacobone
Persister bacteria tolerate bactericidal antibiotics due to transient and reversible phenotypic changes. Since these bacteria can limit the effectiveness of antibiotics to eradicate certain infections, their elimination is a relevant issue. Photodynamic therapy seems suitable for this purpose, but phenotypic tolerance to it has also been reported for Pseudomonas aeruginosa. To test whether any phenotypic feature could confer tolerance against both antibiotics and photoinactivation, survivors from exposures to light in the presence of methylene blue were treated with ofloxacin, an antibiotic effective on non-growing bacteria...
September 7, 2017: Photochemistry and Photobiology
https://www.readbyqxmd.com/read/28879351/design-and-construction-of-a-bifunctional-magnetically-recyclable-3d-comn2o4-cf-hybrid-as-an-adsorptive-photocatalyst-for-the-effective-removal-of-contaminants
#19
Jianhua Zheng, Yandong Hu, Lei Zhang
Herein, a magnetic microsphere CoMn2O4 (MS-CoMn2O4) with a 3D architecture was constructed directly on cellulose fiber (CF) substrates from wastepaper by a solvothermal synthesis method with further calcination treatment. The designed hybrid shows excellent dual functions including rapid catalytic oxidation of tetracycline (TC)/methylene blue (MB) and a high adsorption capacity. What's more, the hybrid is easily recycled using an external magnetic field. In comparison with that of pure MS-CoMn2O4, the enhanced adsorption ability and photocatalytic activity of MS-CoMn2O4/CFs can mainly be attributed to the introduced cellulose fiber supporter in the hybrid system...
September 7, 2017: Physical Chemistry Chemical Physics: PCCP
https://www.readbyqxmd.com/read/28877801/using-electromagnetic-navigation-bronchoscopy-and-dye-injection-to-aid-in-video-assisted-lung-resection
#20
Jordan Brown, Thomas J Lee, Theresa Joiner, William Wrightson
Small (2 cm) peripheral lung lesions and ground glass opacities remain a difficult subset of lung lesions for the diagnosis and management of lung cancer. Surgical biopsy is more difficult for these lesions because intraoperative localization has to be made without the aid of direct visualization or manual palpation. Electromagnetic navigation bronchoscopy can be used in the operating room to identify a small peripheral lesion and marked using an injection of methylene blue, which can be seen on the visceral pleura of the lung...
November 1, 2016: American Surgeon
keyword
keyword
63816
1
2
Fetch more papers »
Fetching more papers... Fetching...
Read by QxMD. Sign in or create an account to discover new knowledge that matter to you.
Remove bar
Read by QxMD icon Read
×

Search Tips

Use Boolean operators: AND/OR

diabetic AND foot
diabetes OR diabetic

Exclude a word using the 'minus' sign

Virchow -triad

Use Parentheses

water AND (cup OR glass)

Add an asterisk (*) at end of a word to include word stems

Neuro* will search for Neurology, Neuroscientist, Neurological, and so on

Use quotes to search for an exact phrase

"primary prevention of cancer"
(heart or cardiac or cardio*) AND arrest -"American Heart Association"