keyword
MENU ▼
Read by QxMD icon Read
search

KTP

keyword
https://www.readbyqxmd.com/read/28406164/spin-polarized-second-harmonic-generation-from-the-antiferromagnetic-cacoso-single-crystal
#1
A H Reshak
The spin-polarized second harmonic generation (SHG) of the recently synthesized CaCoSO single crystal is performed based on the calculated electronic band structure. The calculation reveals that the spin-up (↑) channel of CaCoSO possesses a direct energy gap (Γ(v)-Γ(c)) of about 2.187 eV, 1.187 eV (K(v)-K(c)) for the spin-down (↓) channel and an indirect gap (Γ(v)-K(c)) of about 0.4 eV for the spin-polarized CaCoSO single crystal. The linear optical properties obtained reveal that the recently synthesized crystal exhibits considerable anisotropy with negative uniaxial anisotropy and birefringence favor to enhance the SHG...
April 13, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28349572/nerve-transection-repair-using-laser-activated-chitosan-in-a-rat-model
#2
Neel K Bhatt, Taleef R Khan, Christopher Mejias, Randal C Paniello
OBJECTIVES/HYPOTHESIS: Cranial nerve transection during head and neck surgery is conventionally repaired with microsuture. Previous studies have demonstrated recovery with laser nerve welding (LNW), a novel alternative to microsuture. LNW has been reported to have poorer tensile strength, however. Laser-activated chitosan, an adhesive biopolymer, may promote nerve recovery while enhancing the tensile strength of the repair. Using a rat posterior tibial nerve injury model, we compared four different methods of nerve repair in this pilot study...
March 27, 2017: Laryngoscope
https://www.readbyqxmd.com/read/28267309/formation-structure-and-frequency-doubling-effect-of-a-modification-of-strontium-cyanurate-%C3%AE-scy
#3
Markus Johannes Kalmutzki, Konstantin Dolabdjian, Nadja Wichtner, Markus Ströbele, Christoph Berthold, Hans-Jürgen Meyer
The low-temperature modification of Sr3(O3C3N3)2 was prepared and assigned as α-SCY after the high-temperature phase (now called β-SCY) and its frequency-doubling properties were reported recently. The crystal structure of α-SCY was solved and refined by single-crystal X-ray diffraction. Both modifications of SCY crystallize in noncentrosymmetric space groups, with the low-temperature phase (α-SCY) adopting the lower symmetry structure (Cc). Atomic positions in α-SCY (Cc) reveal only small deviations in comparison to those in the structure of β-SCY (R3c)...
March 7, 2017: Inorganic Chemistry
https://www.readbyqxmd.com/read/28241627/hybrid-q-switched-laser-with-mos-sub-2-sub-saturable-absorber-and-aom-driven-sub-nanosecond-ktp-opo
#4
Junpeng Qiao, Shengzhi Zhao, Kejian Yang, Jia Zhao, Guiqiu Li, Dechun Li, Tao Li, Wenchao Qiao
Two-dimensional (2D) materials, especially transition-metal dichalcogenides, such as molybdenum disulfide (MoS<sub>2</sub>) and tungsten disulfide (WS<sub>2</sub>), have attracted great interests due to their exceptional optical properties as saturable absorbers in laser systems. In this work, at first, we presented a diode-pumped passively Q-switched laser with MoS<sub>2</sub> saturable absorber (MoS<sub>2</sub>-SA). At an incident pump power of 6.54 W, a maximum output power of 1...
February 20, 2017: Optics Express
https://www.readbyqxmd.com/read/28157999/fully-resonant-tunable-monolithic-frequency-conversion-as-a-coherent-uva-source
#5
Joanna A Zielińska, Andrius Zukauskas, Carlota Canalias, Mehmet A Noyan, Morgan W Mitchell
We demonstrate a monolithic frequency converter incorporating up to four tuning degrees of freedom, three temperature and one strain, allowing resonance of pump and generated wavelengths simultaneous with optimal phase-matching. With a Rb-doped periodically-poled potassium titanyl phosphate (KTP) implementation, we demonstrate efficient continuous-wave second harmonic generation from 795 to 397, with low-power efficiency of 72% and high-power slope efficiency of 4.5%. The measured performance shows good agreement with theoretical modeling of the device...
January 23, 2017: Optics Express
https://www.readbyqxmd.com/read/28150483/from-gold-standard-resection-to-reproducible-future-standard-endoscopic-enucleation-of-the-prostate-eep-what-we-know-about-anatomical-enucleation
#6
Richard Naspro, Fernando Gomez Sancha, Michele Manica, Agostino Meneghini, Sascha Ahyai, Tevita Aho, Cristian Fiori, Ivano Vavassori, Luigi F DA Pozzo, Vito Pansadoro, Francesco Montorsi, Thomas R Herrmann
INTRODUCTION: Open prostatectomy (OP) and transurethral resection of the prostate (TURP) have traditionally been the most common surgical approaches for the treatment of benign prostatic hyperplasia causing bladder outlet obstruction and have certainly passed the test of time. In time, many endoscopic surgical procedures have been described as an alternative mini-invasive treatment. Holmium laser enucleation (HoLEP) guaranteed functional outcomes similar to OP and TURP with lower peri-operative complication rates for any prostate size...
February 1, 2017: Minerva Urologica e Nefrologica, the Italian Journal of Urology and Nephrology
https://www.readbyqxmd.com/read/28141651/indications-of-potassium-titanyl-phosphate-laser-therapy-for-slow-flow-vascular-malformations-in-oral-region
#7
Harutsugi Abukawa, Michihide Kono, Hayato Hamada, Ayako Okamoto, Takafumi Satomi, Daichi Chikazu
BACKGROUND: Indications for laser therapy for slow-flow vascular malformations in the oral and maxillofacial regions have not been clearly documented. The authors aimed to estimate the frequency of resolution of slow-flow vascular malformations and to identify risk and prognostic factors associated with resolution in potassium titanyl phosphate (KTP) laser treatment. METHODS: This study was designed as a prospective cohort study. Patients who had diagnosed slow-flow vascular malformations were continuously assigned to receive KTP laser therapy...
January 30, 2017: Journal of Craniofacial Surgery
https://www.readbyqxmd.com/read/28139145/a-case-report-of-combination-treatment-with-potassium-titanyl-phosphate-laser-and-brimonidine-topical-gel-in-erythematotelangiectatic-rosacea
#8
M A Hofmann, G Kokolakis
Laser therapies have been shown to provide symptom improvement in patients with erythema and telangiectasia of rosacea; however, they are associated with side effects such as erythema. Combinatorial treatment with pharmacological agents and laser have demonstrated better efficacy, fewer side effects and continued long-term remission compared with monotherapies. A case of moderate facial erythema that responded well to combination treatment with brimonidine 3 mg/g gel and a treatment course of potassium-titanyl phosphate (KTP) laser therapy is presented, showing a reduction from baseline, maintained after final laser session, by applying brimonidine 3 mg/g gel daily...
January 31, 2017: Journal of Cosmetic and Laser Therapy: Official Publication of the European Society for Laser Dermatology
https://www.readbyqxmd.com/read/28090722/bi-io3-f2-the-first-metal-iodate-fluoride-with-a-very-strong-second-harmonic-generation-effect
#9
Fei-Fei Mao, Chun-Li Hu, Xiang Xu, Dong Yan, Bing-Ping Yang, Jiang-Gao Mao
The first metal iodate fluoride, Bi(IO3 )F2 , with a strong second harmonic generation (SHG) effect has been prepared. Bi(IO3 )F2 crystallizes in the polar space group C2 and features a three-dimensional [BiF2 ](+) cationic framework with IO3 groups capping the inner walls of the one-dimensional tunnels. This [BiF2 ](+) cationic framework acts as a template for the assembly of the polar IO3 units in a favorable superposed fashion, which leads to the polar structure of the material. Bi(IO3 )F2 displays a rather wide transmittance window (0...
January 16, 2017: Angewandte Chemie
https://www.readbyqxmd.com/read/28018307/variable-effects-of-non-steroidal-anti-inflammatory-drugs-nsaids-on-selected-biochemical-processes-mediated-by-soil-microorganisms
#10
Mariusz Cycoń, Sławomir Borymski, Bartłomiej Żołnierczyk, Zofia Piotrowska-Seget
Non-steroidal anti-inflammatory drugs (NSAIDs) are the most frequently used group of pharmaceuticals. The high consumption and the uncontrolled disposal of unused drugs into municipal waste or their deposit in landfills can result in an increased concentration of these compounds in soils. Moreover, these drugs can affect the microbial activity. However, there is a lack of knowledge about these effects or it is very limited. Therefore, the objective of this study was to compare the impact of selected commercially available NSAIDs, i...
2016: Frontiers in Microbiology
https://www.readbyqxmd.com/read/27897130/recommendations-for-potassium-titanyl-phosphate-laser-in-the-treatment-of-cholesteatoma
#11
REVIEW
Gavin John le Nobel, Adrian Lewis James
Potassium-titanyl-phosphage (KTP) lasers possess many characteristics suitable for otologic surgery. The objective of this report is to provide recommendations on the use of KTP laser for cholesteatoma surgery based on a narrative review of currently available evidence. PubMed and the Cochrane Review of randomized control trials were searched for relevant publications on efficacy and adverse effects and relevant articles appraised by the authors using Oxford Centre for Evidence-based Medicine criteria for recommendations...
December 2016: Journal of International Advanced Otology
https://www.readbyqxmd.com/read/27879303/smooth-muscle-tumour-of-uncertain-malignant-potential-smtump-in-the-nasal-cavity-an-incidental-finding
#12
Dipak Ranjan Nayak, Asheesh Dora Ghanpur, Apoorva N Reddy, Swati Sharma
Sino-nasal smooth muscle tumours of uncertain malignant potential (SMTUMP) are very rare neoplasms of mesenchymal origin with features in between a benign leiomyoma and a leiomyosarcoma. We report a rare case of SMTUMP in a 44-year-old woman, who presented with vague symptoms of pharyngitis. Nasal endoscopy revealed a smooth mass in left nasal cavity. Contrast-enhanced CT and MRI scans showed features likely to be inverted papilloma or olfactory neuroblastoma or meningioma. Excision was planned and intraoperatively, frozen section revealed a probable spindle cell lesion...
November 22, 2016: BMJ Case Reports
https://www.readbyqxmd.com/read/27869377/physical-modalities-for-the-treatment-of-rosacea
#13
Maja A Hofmann, Percy Lehmann
Rosacea is characterised by a wide variety of vascular changes. Apart from telangiectasia and erythema, often so-called flushing occurs. These vascular abnormalities can be targeted with specific light and laser devices. In addition to KTP laser, pulsed dye laser (PDL) and Nd:YAG laser, also intense pulsed light devices (IPLs) are used. The described therapeutic effects include the reduction of vascular abnormalities and even improvement of papulopustular changes. While the KTP laser shows very good results in telangiectasia, the dye laser and IPL devices are used preferably in erythema...
December 2016: Journal der Deutschen Dermatologischen Gesellschaft, Journal of the German Society of Dermatology: JDDG
https://www.readbyqxmd.com/read/27869376/physikalische-methoden-zur-behandlung-der-rosazea
#14
Maja A Hofmann, Percy Lehmann
Die Rosazea ist durch vielfältige vaskuläre Veränderungen gekennzeichnet. Neben Teleangiektasien und Erythemen treten häufig auch sogenannte "Flushings" auf. Haupteinsatzgebiete von Licht- und Lasersystemen sind diese vaskulären Veränderungen, wie Erytheme und Teleangiektasien. Neben dem KTP-Laser, dem Farbstofflaser (PDL) und dem Nd:YAG-Laser kommen auch Blitzlampen (IPL) zum Einsatz. Neben der Rückbildung der vaskulären Komponente, ist auch eine Verbesserung der papulopustulösen Komponente beschrieben...
December 2016: Journal der Deutschen Dermatologischen Gesellschaft, Journal of the German Society of Dermatology: JDDG
https://www.readbyqxmd.com/read/27859300/potassium-titanyl-phosphate-laser-welding-following-complete-nerve-transection
#15
Neel K Bhatt, Christopher Mejias, Dorina Kallogjeri, Derrick C Gale, Andrea M Park, Randal C Paniello
OBJECTIVES/HYPOTHESIS: Cranial nerve transection during head and neck surgery is conventionally repaired by microsuture reanastomosis. Laser nerve welding (LNW), using CO2 laser to spot-weld the epineurium of transected nerve endings, has been shown in animal models to be a novel alternative to microsuture repair. This method avoids needle/suture material and minimizes instrumentation of the nerve. We hypothesized that potassium titanyl phosphate (KTP) laser would be superior to CO2 laser in repairing transected nerves...
November 16, 2016: Laryngoscope
https://www.readbyqxmd.com/read/27857335/terahertz-parametric-generation-and-amplification-from-potassium-titanyl-phosphate-in-comparison-with-lithium-niobate-and-lithium-tantalate
#16
Ming-Hsiung Wu, Yu-Chung Chiu, Tsong-Dong Wang, Gang Zhao, Andrius Zukauskas, Fredrik Laurell, Yen-Chieh Huang
We report superior terahertz parametric generation from potassium titanyl phosphate (KTP) over congruent-grown lithium niobate (CLN) and lithium tantalate (CLT) in terms of parametric gain and laser damage resistance. Under the same pump and crystal configurations, the signal emerged first from KTP, 5% Mg-doped CLN, CLN, and then finally from CLT. The signal growth rate in KTP was comparable to that in 5%-Mg-doped CLN, but the signal power from KTP reached a much higher value after all the other crystals were damaged by the pump laser...
November 14, 2016: Optics Express
https://www.readbyqxmd.com/read/27828399/widely-tunable-high-repetition-rate-terahertz-generation-in-gase-with-a-compact-dual-wavelength-ktp-opo-around-2-%C3%AE-m
#17
Jialin Mei, Kai Zhong, Maorong Wang, Yang Liu, Degang Xu, Wei Shi, Yuye Wang, Jianquan Yao, Robert A Norwood, Nasser Peyghambarian
A compact efficient high-repetition-rate doubly-resonant dual-wavelength KTP optical parametric oscillator (OPO), with output power up to 3.65 W and tuning ranges of 2.088-2.133 μm/2.171-2.122 μm for signal/idler waves, was deployed for terahertz (THz) generation in a GaSe crystal. Based on difference frequency generation (DFG), the THz wave was continuously tunable from 730.9 μm (0.41 THz) to 80.8 μm (3.71 THz), believed to be the first report of a compact high-repetition-rate widely-tunable THz source...
October 3, 2016: Optics Express
https://www.readbyqxmd.com/read/27827498/control-of-clustering-behavior-in-anionic-cerium-iii-corrole-complexes-from-oligomers-to-monomers
#18
Keith C Armstrong, Stephan Hohloch, Trevor D Lohrey, Ryan A Zarkesh, John Arnold, Mitchell R Anstey
The first synthesis of anion capped cerium corrole complexes is reported. Unusual clustering of the lanthanide corrole units has been found and the degree of aggregation can be controlled by the choice of the capping ligand. A polymeric structure 1a, with the general formula [Cor-Ce(THF)-Cp-Na]n (Cor = 5,15-bis(2,4,6-trimethylphenyl)-10-(4 methoxyphenyl)-corrole, THF = tetrahydrofuran), is formed using sodium cyclopentadienide (NaCp) and a dimeric structure 2a, with the general formula [Cor-Ce-Tp]2, is formed when potassium tris(pyrazolyl)borate (KTp) is used...
November 22, 2016: Dalton Transactions: An International Journal of Inorganic Chemistry
https://www.readbyqxmd.com/read/27823669/an-effective-microfluidic-based-liquid-phase-microextraction-device-%C3%AE-lpme-for-extraction-of-non-steroidal-anti-inflammatory-drugs-from-biological-and-environmental-samples
#19
María Ramos-Payan, Santiago Maspoch, Andreu Llobera
In this work, the traditional liquid phase microextraction (LPME) has been miniaturized into a microfluidic device (μLPME) where liquid phase microextraction is combined with an HPLC procedure. This integration enables extraction and determination of acid drugs by μLPME and HPLC, respectively. The analytes selected for the test are five widely used non-steroidal anti-inflammatory drugs (NSAIDs): salicylic acid (SAC), ketoprofen (KTP), naproxen (NAX), diclofenac (DIC) and ibuprofen (IBU). They have successfully been detected in biological (urine and saliva) and environmental (lake and river water) samples with excellent clean up, high extraction efficiency and good enrichment factor under stopped-flow conditions...
November 23, 2016: Analytica Chimica Acta
https://www.readbyqxmd.com/read/27805703/gaussian-entanglement-distribution-with-gigahertz-bandwidth
#20
Stefan Ast, Melanie Ast, Moritz Mehmet, Roman Schnabel
The distribution of entanglement with Gaussian statistic can be used to generate a mathematically proven secure key for quantum cryptography. The distributed secret key rate is limited by the entanglement strength, the entanglement bandwidth, and the bandwidth of the photoelectric detectors. The development of a source for strongly bipartite entangled light with high bandwidth promises an increased measurement speed and a linear boost in the secure data rate. Here, we present the experimental realization of a Gaussian entanglement source with a bandwidth of more than 1...
November 1, 2016: Optics Letters
keyword
keyword
40950
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"