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https://www.readbyqxmd.com/read/29905682/frequency-domain-hong-ou-mandel-interference-with-linear-optics
#1
Poolad Imany, Ogaga D Odele, Mohammed S Alshaykh, Hsuan-Hao Lu, Daniel E Leaird, Andrew M Weiner
The Hong-Ou-Mandel (HOM) interference is one of the most fundamental quantum-mechanical effects that reveal a nonclassical behavior of single photons. Two identical photons that are incident on the input ports of an unbiased beam splitter always exit the beam splitter together from the same output port, an effect referred to as photon bunching. In this Letter, we utilize a single electro-optic phase modulator as a probabilistic frequency beam splitter, which we exploit to observe HOM interference between two photons that are in different spectral modes, yet are identical in other characteristics...
June 15, 2018: Optics Letters
https://www.readbyqxmd.com/read/29904762/user-defined-local-stimulation-of-live-tissue-through-a-movable-microfluidic-port
#2
Megan A Catterton, Austin F Dunn, Rebecca R Pompano
Many in vivo tissue responses begin locally, yet most in vitro stimuli are delivered globally. Microfluidics has a unique ability to provide focal stimulation to tissue samples with precise control over fluid location, flow rate, and composition. However, previous devices utilizing fixed ports beneath the tissue required manual alignment of the tissue over the ports, increasing the risk of mechanical damage. Here we present a novel microfluidic device that allows the user to define the location of fluid delivery to a living tissue slice without manipulating the tissue itself...
June 15, 2018: Lab on a Chip
https://www.readbyqxmd.com/read/29901585/abdominal-peripheral-nerve-block-as-the-only-anesthetic-technique-for-totally-extraperitoneal-endoscopic-inguinal-hernia-repair-two-case-reports
#3
Woojin Kwon, Seunguk Bang, Hyojung Soh, Won Jun Jeong, Sang Chul Lee, Byung Jo Choi
RATIONALE: Laparoscopic totally extraperitoneal (TEP) inguinal hernia repair is a rapidly evolving, minimally invasive treatment modality for inguinal hernia. Compared with open hernia repair, this method requires a smaller incision, has cosmetic advantages, and facilitates rapid recovery and early return to daily activities because of less postoperative pain. Because general anesthesia is essential for TEP hernia repair, it cannot be performed on patients who have an increased risk of developing complications when placed under general anesthesia...
June 2018: Medicine (Baltimore)
https://www.readbyqxmd.com/read/29898480/-laparoscopic-treatment-of-hemoabdomen-in-a-dog-after-prescrotal-castration
#4
Michael Brückner
A 2-year-old Bearded Collie was referred for suspected hemoabdomen after prescrotal castration. On presentation the dog was in stable body condition and the hematocrit was within the reference range. Abdominal ultrasound revealed a moderate amount of free corpuscular fluid; therefore the dog was prepared for laparoscopic surgery. A single port access at the umbilicus was performed and insufflation with CO2 started with a pressure of 8 mmHg. Approximately one liter of blood was removed from the abdominal cavity with a suction/irrigation tube to allow inspection of the inguinal rings...
June 2018: Tierärztliche Praxis. Ausgabe K, Kleintiere/Heimtiere
https://www.readbyqxmd.com/read/29897840/robot-docking-time-cumulative-summation-analysis-of-a-procedure-independent-learning-curve-in-pediatric-urology
#5
Junaid Ashraf, Jamie Krishnan, Alexander Turner, Ramnath Subramaniam
PURPOSE: The learning curve is an important method of assessment of progression in the use of a new technique or device and, in the field of robotic surgery, is most commonly described for individual procedures, often concentrating on console time and outcomes. We contemplated whether a learning curve of the similar nature and duration was exhibited in the procedure-independent variable of docking time. MATERIALS AND METHODS: The time from first incision to end of robot docking was found for a single surgeon's first 55 robotic cases, which encompassed a range of pediatric urological procedures...
June 13, 2018: Journal of Laparoendoscopic & Advanced Surgical Techniques. Part A
https://www.readbyqxmd.com/read/29897836/the-safety-and-feasibility-of-the-single-port-laparoscopic-transabdominal-preperitoneal-inguinal-hernia-repair-through-retropubic-radical-prostatectomy-scar-prospective-case-series
#6
Jae Hoon Chung, Tae Hyo Kim, Ki Soo Lee, Jeong Man Cho, Kyu Shik Kim, Hong Yong Choi, Seung Wook Lee
INTRODUCTION: To avoid an additional scar, our novel single-port laparoscopic inguinal hernia repair technique that utilizes the previous prostatectomy scar was conducted. Inguinal hernia is one of the most common complications of radical prostatectomy that require surgical repair. At present, such surgical repair inevitably leaves additional scars on the abdominal wall. This case series study was performed to determine the safety and feasibility of this procedure in patients with inguinal hernia after radical prostatectomy...
June 13, 2018: Journal of Laparoendoscopic & Advanced Surgical Techniques. Part A
https://www.readbyqxmd.com/read/29895293/robotic-treatment-of-oligometastatic-kidney-tumor-with-synchronous-pancreatic-metastasis-case-report-and-review-of-the-literature
#7
Andrea Boni, Giovanni Cochetti, Stefano Ascani, Michele Del Zingaro, Francesca Quadrini, Alessio Paladini, Diego Cocca, Ettore Mearini
BACKGROUND: The management of metastatic Renal Cell Carcinoma (RCC) has changed dramatically in the last 20 years, and the role of surgery in the immunotherapy's era is under debate. Metastatic lesions interesting pancreas are infrequent, but those harbouring from RCC have an high incidence. If metachronous resections are not rare, synchronous resection of primary RCC and its pancreatic metastasis is uncommonly reported, and accounts for a bad prognosis. CASE PRESENTATION: We report the case of a 68 years old woman, who presented hematuria at hospital incoming, with radiological appearance of a 13 cm left renal mass, with a 2...
June 13, 2018: BMC Surgery
https://www.readbyqxmd.com/read/29889629/laparoscopic-ovariectomy-with-a-single-port-multiple-access-device-in-seven-african-lionesses-panthera-leo
#8
Antoine Leclerc, Adeline Decambron, Cédric Commère, Baptiste Mulot, Véronique Viateau, Mathieu Manassero
CASE DESCRIPTION 7 privately owned female African lions (Panthera leo) that had been bred for public exhibition and were housed in outdoor pens were evaluated prior to undergoing elective ovariectomy. CLINICAL FINDINGS All animals were healthy. Median age was 15 months (range, 9 to 34 months), and median body weight was 71 kg (156 lb; range, 48 to 145 kg [106 to 319 lb]). TREATMENT AND OUTCOME Surgical sterilization by means of single-incision laparoscopic ovariectomy was elected. A 2- to 3-cm-long skin incision was made just caudal to the umbilicus, and a single-port multiple-access device was bluntly inserted through the incision...
June 15, 2018: Journal of the American Veterinary Medical Association
https://www.readbyqxmd.com/read/29889110/intraoperative-neural-monitoring-in-endoscopic-thyroidectomy-via-bilateral-areola-approach
#9
Daqi Zhang, Qingfeng Fu, Gianlorenzo Dionigi, Tie Wang, Jingwei Xin, Jiao Zhang, Gaofeng Xue, Hongbo Li, Hui Sun
OBJECTIVE: The aim of this report was dual: (a) to describe the step by step standardized intraoperative neural monitoring (IONM) procedure for recurrent laryngeal nerve (RLN) and external branch of the superior laryngeal nerve focusing on percutaneous IONM method, and (b) evaluation and outcomes of intermittent IONM in 237 endoscopic thyroidectomy via bilateral areolar approach cases. MATERIALS AND METHODS: A 10-mm curved incision is made along the margin of the right areola at the 2 to 4 o'clock position for the 30-degree endoscope...
June 7, 2018: Surgical Laparoscopy, Endoscopy & Percutaneous Techniques
https://www.readbyqxmd.com/read/29885331/early-repair-of-post-hysterectomy-vesicovaginal-fistulae-through-a-laparoscopic-transperitoneal-extravesical-approach-experience-of-a-single-center
#10
G Giusti, M Lucci Chiarissi, D Abate, G De Vita, S Angioni, A De Lisa
OBJECTIVES: To verify the feasibility and effectiveness of the correction of Vesicovaginal fistulae (VVF) through a laparoscopic transperitoneal extravesical approach and TachoSil application as interposition tissue. VVF are the most common fistulae of the urinary tract and even today there is no agreement over the preferred approach to treat this kind of pathologic condition. METHODS: We retrospectively analysed the data of women who, from July 2010 to July 2017, underwent early laparoscopic transperitoneal extravesical VVF repair...
June 6, 2018: Urology
https://www.readbyqxmd.com/read/29880341/laparoendoscopic-single-site-plus-1-port-donor-nephrectomy-division-of-roles-to-shorten-warm-ischemic-time
#11
M Nitta, Y Kawamura, T Uchida, T Kano, S Yuzuriha, T Otaki, T Umemoto, Y Shimizu, M Kawakami, H Kim, N Nakajima, K Hanai, S Shoji, S Uehara, S Takiguchi, H Ishida, M Nakamura, T Terachi, A Miyajima
BACKGROUND: In this study we present our new surgical procedure, laparoendoscopic single-site surgery plus 1 for donor nephrectomy (LESS+1-DN), which shortens warm ischemic time (WIT) and improves surgical outcomes. METHODS: From January 2013 to February 2017, 15 patients who underwent LESS-DN and 41 patients who underwent LESS+1-DN at our institution were evaluated retrospectively. Patients were divided into 3 groups: group A, 15 cases of LESS-DN; group B, the first 15 patients who underwent LESS+1-DN; and group C, 26 patients who underwent subsequent LESS+1-DN...
June 2018: Transplantation Proceedings
https://www.readbyqxmd.com/read/29877754/increased-foot-stretcher-height-improves-rowing-performance-evidence-from-biomechanical-perspectives-on-water
#12
Yang Liu, Binghong Gao, Jiru Li, Zuchang Ma, Yining Sun
The aim of this study was to investigate whether changes on foot-stretcher height were associated with characteristics of better rowing performance. Ten male rowers performed a 200 m rowing trial at their racing rate at each of three foot-stretcher heights. A single scull was equipped with an accelerometer to collect boat acceleration, an impeller with embedded magnets to collect boat speed, specially designed gate sensors to collect gate force and angle, and a compact string potentiometer to collect leg drive length...
June 7, 2018: Sports Biomechanics
https://www.readbyqxmd.com/read/29876992/fetoscopic-two-layers-closure-of-open-neural-tube-defects
#13
C Giné, S Arévalo, N Maíz, C Rodó, S Manrique, A Poca, J A Molino, E Carreras, M López
PURPOSE: Fetoscopic technique for closure of open neural tube defects (NTD) remains controversial as the use of patches or the single layer closure are believed to stay far from the standards of a good neurosurgical reconstruction. We describe hereby a fetoscopic two-layer closure technique (myofascial and skin) for the treatment of NTD in 5 patients and our preliminary anatomical outcome at birth. MATERIAL AND METHODS: With the exteriorized uterus and three 10Fr ports, the placode is dissected from the surrounding tissue and de-tethered, removing the cystic tissue...
June 6, 2018: Ultrasound in Obstetrics & Gynecology
https://www.readbyqxmd.com/read/29866948/ballistic-transport-in-graphene-y-junctions-in-transversal-electric-field
#14
George Alexandru Nemnes, Tudor Luca Mitran, Daniela Dragoman
We investigate the prospects for current modulation in single layer graphene Y-junctions in the ballistic regime, under external electric field. Overcoming the inability of inducing field effect in graphene nanoribbons by a stacked gate, the proposed in-plane electric field setup enables a controlled current transfer between the branches of the Y-junction. This behavior is further confirmed by changing the angular incidence of the electric field. The ballistic transmission functions are calculated for the three terminal system using the non-equilibrium Green's function formalism, in the framework of density functional theory, under finite bias conditions...
June 5, 2018: Nanotechnology
https://www.readbyqxmd.com/read/29866562/hydrodynamic-classification-of-submerged-thermal-saline-inclined-single-port-discharges
#15
Hossein Ardalan, Fereidon Vafaei
The discharge of warm effluent from thermal power plants and saline effluent from desalination sites in aquatic environments can, if the sufficient dilution is not attained, subsequently lead to severe environmental damage in the water column or surrounding waterbed. This paper attempted to experimentally assess an inclined single-port discharge system for thermal-saline effluent in a still, homogeneous water environment. The experiments were conducted for different combinations of salinity and warmth of the effluent and at three discharge angles of 30°, 45° and 60°...
May 2018: Marine Pollution Bulletin
https://www.readbyqxmd.com/read/29866396/single-site-robotic-cholecystectomy-versus-multi-port-laparoscopic-cholecystectomy-a-systematic-review-and-meta-analysis
#16
Ning Sun, Jialin Zhang, Chengshuo Zhang, Yue Shi
OBJECTIVE: To investigate the outcomes of single-site robotic cholecystectomy (SSRC) compared to multi-port laparoscopic cholecystectomy (MLC), evaluate the safety and feasibility of SSRC. METHODS: To find relevant studies, the electronic databases PubMed, MEDLINE, The Cochrane Library, and EMBASE were used to seek information in English literature from 2011 to 2017. Studies comparing SSRC to MLC, for any indication, were included in the analysis. This systematic review and meta-analysis was performed with RevMan Version 5...
May 22, 2018: American Journal of Surgery
https://www.readbyqxmd.com/read/29863177/a-quantum-field-approach-for-advancing-optical-coherence-tomography-part-i-first-order-correlations-single-photon-interference-and-quantum-noise
#17
M E Brezinski
Optical coherence tomography has become an important imaging technology in cardiology and ophthalmology, with other applications under investigations. Major advances in optical coherence tomography (OCT) imaging are likely to occur through a quantum field approach to the technology. In this paper, which is the first part in a series on the topic, the quantum basis of OCT first order correlations is expressed in terms of full field quantization. Specifically first order correlations are treated as the linear sum of single photon interferences along indistinguishable paths...
2018: Journal of lasers, optics & photonics
https://www.readbyqxmd.com/read/29863160/technical-details-of-video-assisted-transcervical-mediastinal-dissection-for-esophageal-cancer-and-its-perioperative-outcome
#18
Kazuhiko Mori, Susumu Aikou, Koichi Yagi, Masato Nishida, Takashi Mitsui, Yukinori Yamagata, Hiroharu Yamashita, Sachiyo Nomura, Yasuyuki Seto
To reduce pulmonary complications after esophagectomy, the transthoracic procedure should be shortened or totally avoided. Transcervical approach assisted by mediastinoscope for the upper mediastinum may be advantageous for this purpose. We carried out video-assisted transcervical mediastinal dissection (VATCMD) as part of totally non-transthoracic radical esophagectomy. A single-port laparoscopy device was adopted to a small cervical incision and the mediastinum was inflated with a positive pressure of 6 to 10 mmHg...
September 2017: Annals of gastroenterological surgery
https://www.readbyqxmd.com/read/29859685/enantioselective-multiple-heartcut-two-dimensional-ultra-high-performance-liquid-chromatography-method-with-a-coreshell-chiral-stationary-phase-in-the-second-dimension-for-analysis-of-all-proteinogenic-amino-acids-in-a-single-run
#19
Ulrich Woiwode, Stefan Neubauer, Wolfgang Lindner, Stephan Buckenmaier, Michael Lämmerhofer
A multiple heartcut (MHC) 2D-UHPLC method with UV detection has been developed for the enantioselective analysis of complex amino acid mixtures in a single run. The MHC method is based on an achiral gradient RPLC separation with 1.8 μm C18 phase (100 × 2.1 mm ID column) in the first dimension (1 D) and enantioselective isocratic separation on a tert-butylcarbamoylquinine-based 2.7 μm Coreshell particle column (50 × 3 mm ID) in the second dimension (2 D). Pre-column derivatization has been performed with Sanger's reagent (2,4-dinitrofluorobenzene) yielding chromogenic 2,4-dinitrophenylated amino acids (DNP-AAs)...
May 28, 2018: Journal of Chromatography. A
https://www.readbyqxmd.com/read/29847482/single-port-laparoscopic-appendectomy-beyond-the-learning-curve-a-retrospective-comparison-with-multi-port-laparoscopic-appendectomy
#20
Sarah Assali, Sarah Eapen, Terry Carman, Sophia Horattas, Christopher R Daigle, Charudutt Paranjape
OBJECTIVES: Previous comparisons between single-port laparoscopic appendectomy (SPLA) and multi-port laparoscopic appendectomy have been conflicting and limited. We compare our single-surgeon, SPLA experience with multi-port cases performed during the same time. METHODS: A retrospective chart review of 128 single-surgeon single-port and 941 multi-port laparoscopic appendectomy cases from April 2009 to December 2014 was conducted. RESULTS: Patient demographics and preoperative laboratory values were comparable...
May 29, 2018: Surgical Laparoscopy, Endoscopy & Percutaneous Techniques
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