Determination of Acephate, Dinotefuran, and Emamectin Benzoate in a Pesticide Formulation: A Single-Laboratory Validation.

Background: The advantage of simultaneous separation and quantification is the reduction of analysis time and consumption of solvents and reagents.

Objective: The objective of the present investigation was to optimize and validate a novel, rapid, and simple reverse-phase high-performance liquid chromatographic method for the simultaneous determination of acephate, dinotefuran, and emamectin benzoate in a pesticide formulation.

Method: The chromatographic separation and quantification were accomplished by using Kromasil CN column (250 mm × 4.

Synthesis of 3,4-Dihydropyrano[c]chromenes Using Carbon Microsphere Supported Copper Nanoparticles (Cu-NP/C) Prepared from Loaded Cation Exchange Resin as a Catalyst.

Aim And Objective: The present study was performed with the aim to develop an efficient and environmentally benign protocol for the synthesis of biologically siginifcant 3, 4-dihydropyrano[c]chromenes using a new catalytic material. The protocol involves the use of a reusable, environment friendly materials and solvents with operational simplicity.

Materials And Methods: Carbon microsphere supported copper nanoparticles (Cu-NP/C) prepared from loaded cation exchange resin were synthesized, characterized with well versed analytical techniques such as XRD, SEM and Raman spectroscopy and the synthesized material was used as a catalyst for the environmentally benign synthesis of 3,4-dihydropyrano[c]chromenes.

Bilateral Oval and Round Window Atresia on CT Temporal Bone: A Rare Anomaly Clinically Mimicking Otosclerosis in an Adult.

We present a rare adult case of bilateral oval and round window atresia. Clinical and audiologic findings were suggestive of otosclerosis. High resolution CT Temporal bones showed unequivocal findings of bilateral oval and round window atresia.

Stenotrophomonas skull base osteomyelitis presenting as necrotizing otitis externa: Unmasking by CT and MRI-case report and review.

Necrotizing or malignant otitis externa in patients presenting with mild clinical findings can pose as a tip of the iceberg; computed tomography (CT) and/or magnetic resonance imaging (MRI) unveils the clinical-imaging discrepancy and unmasks the presence of skull-base osteomyelitis (SBO). is the most common causative pathogen of SBO, followed by fungal and other rare bacterial organisms. This report presents a rare case in an elderly diabetic patient, where the pathogen was isolated.

Frozen section is not cost beneficial for the assessment of margins in oral cancer.

Background: Routine use of frozen section (FS) is a costly procedure and sparsely available in resource poor countries. A proper cost benefit analysis may help to reduce its routine use and would empower surgeons to perform oral cancer surgeries without having FS facility. FS is performed to identify microscopic spread beyond gross disease that cannot be assessed clinically.

Proton Triggered Colorimetric and Fluorescence Response of a Novel Quinoxaline Compromising a Donor-Acceptor System.

Quinoxaline-based novel acid-responsive probe was designed on the basis of a conjugated donor-acceptor (D-A) subunit. shows colorimetric and fluorometric changes through protonation and deprotonation in dichloromethane. With the addition of the trifluoroacetic acid (TFA), UV-vis absorption spectral changes in peak intensity of was observed.

PHASE DEPENDENT OPTICALLY STIMULATED LUMINESCENCE IN CU-DOPED Sr4Si3O8Cl4.

Phase dependent optically stimulated luminescence (OSL) is studied in Cu-doped Sr4Si3O8Cl4. The Study shows that samples in which amount of contributing strontium metasilicate phase in Cu-doped Sr4Si3O8Cl4 is less, show intense OSL while those samples in which strontium metasilicate phase is more show weak OSL. The observed Cu luminescence is also found to be phase dependent.

PHOTOLUMINESCENCE, THERMOLUMINESCENCE AND OPTICALLY STIMULATED LUMINESCENCE STUDIES IN ZINC-BASED FLUOROPERVOSKITES.

The optically stimulated luminescence, thermoluminescence and photoluminescence in various Cu and Ag doped zinc based fluoropervoskites are studied. In all the samples, photoluminescence of Cu+ and Ag+ is observed which could be attributed to 3d94 s1←→3d10 and 4d95 s1←→5d10 transitions, respectively. The observed emission is double humped and the main emission band shifts to the lower wavelength side with increasing ionic size of the alkali ion.

Preliminary results on the photoluminescence and optically stimulated luminescence in Cu-doped and Ag-doped ZnB X (B = Li, Na, K: X = Cl, Br) compounds.

Photoluminescence, and optically stimulated luminescence in ZnB X (B; Li,Na,K: X; Cl,Br) compounds doped with Cu or Ag were studied. Double humped emission bands attributable to the activators were observed in all the samples. The observed photoluminescence of Cu and Ag could be identified with 3d 4s ↔3d and 4d 5s ↔5d transitions respectively.

Oral cancer: review of current management strategies.

Background: India has one of the highest incidences of oral cancer and accounts for about 30% of all new cases annually. A high prevalence of smokeless tobacco use has led to an increasing incidence, which in combination with delayed presentation has made oral cancer a major health problem in India. Limited access to cancer care, relative lack of trained healthcare providers and financial resources are some of the challenges to the management of oral cancer in India despite improvements in diagnostic techniques and management strategies.

Gingivobuccal mucosal cancers: resection to reconstruction.

Purpose Of Review: Oral cancer is rapidly emerging as a major health problem across the globe. The Southeast Asian subcontinent has a high incidence of oral cancer and gingivobuccal complex forms the commonest subsite. The habit of chewing smokeless tobacco and areca nut are mainly responsible for this site predilection.

Efficacy of targeted middle meatal antibiotics and endoscopic sinus surgery.

Background: Postoperative infection remains a significant comorbidity of endoscopic sinus surgery (ESS) delayed healing, synechia formation, etc. The objective of this study was to compare the incidence of postoperative infection after ESS in patients receiving conventional postoperative oral antibiotic prophylaxis versus a synthetic bioabsorbable antibiotic-soaked nasal sponge used in the middle meatus (MM) in lieu of oral antibiotics.

Methods: A prospective randomized multicenter trial included 321 chronic rhinosinusitis patients undergoing minimally invasive ESS who received either 1 week of oral antibiotics and a saline-soaked bioabsorbable MM sponge (control group) or no oral antibiotics and the placement of a bacitracin-soaked bioabsorbable sponge in the MM (study group).

Factors influencing morbidity after surgical management of malignant thyroid disease.

Objectives: We performed a retrospective study of cases from 2005 to 2010 at an academic tertiary care center to analyze the factors that influence morbidity in surgical management of thyroid malignancy.

Methods: The rates of recurrent laryngeal nerve (RLN) injury and hypoparathyroidism (HPT) were analyzed in the entire cohort. The comparison groups were 1) primary surgery versus revision; 2) total thyroidectomy versus total thyroidectomy combined with neck node dissection; and 3) two groups defined by surgical technique according to the RLN approach: group 1, in which the RLN was identified inferiorly in the tracheoesophageal groove, and group 2, in which the RLN was identified near the cricothyroid joint point of entry.

Functional swallowing outcomes following transoral robotic surgery vs primary chemoradiotherapy in patients with advanced-stage oropharynx and supraglottis cancers.

Objectives: To evaluate functional swallowing outcomes in patients undergoing transoral robotic surgery vs primary chemoradiotherapy for the management of advanced-stage oropharynx and supraglottis cancers.

Design: Prospective nonrandomized clinical trial.

Setting: Academic research.

Positron-emission tomography pitfalls related to oral prosthesis.

This case report describes false-positive positron-emission tomography/computed tomography (PET/CT) findings related to oral prostheses and its implications in cancer surveillance. In head and neck cancer management, F18-flurodeoxyglucose (FDG) PET/CT is widely accepted for evaluating treatment response and detecting recurrence. Interpretation of FDG PET/CT images in this setting is often challenging due to various prostheses and reconstruction methods.

Our experience with split electrode array implant for obliterated cochlea.

Unlabelled: To study the outcomes of split electrode array cochlear implantation in ossified cochlea using the CAP scoring system. Retrospective case study. Tertiary referral center.

Management of early nasal polyposis using a steroid-impregnated nasal dressing.

Background: Oral corticosteroids are the mainstay of medical management of sinonasal polyposis. However, systemic steroid-related side effects can be significant in both the short-term and long-term. Topical targeted steroids in optimal concentrations to the affected mucosa present an attractive alternative.

Cochlear stenting: how I do it.

Post-meningitis cases with profound sensorineural hearing loss are known to have progressive labyrinthine ossification; such cases need to be implanted early. In our region, often a substantial amount of time is spent procuring the necessary finances for a cochlear implant; therefore, here we describe our technique of maintaining cochlear lumen patency in post-meningitis cases with early ossification, for a complete functional electrode insertion at a later date. This is a descriptive case study of a patient having post-meningitis profound deafness, with imaging studies showing early cochlear ossification, who was rehabilitated with a cochlear implant.

Incudostapedial joint arthroplasty using temporalis fascia/perichondrium ties.

Incudostapedial joint dislocation is the most frequently found ossicular chain defect. In these cases reconstitution of joint capsule is important in maintaining joint integrity. But reconstruction of dislocated incudostapedial joint is a challenging procedure as this joint is devoid of any muscular or soft tissue support.

Juvenile nasopharyngeal angiofibroma-our experience at a referral hospital.

Nasopharyngeal angiofibroma is a rare, highly vascular locally invasive tumor with a strong tendency to bleed. It usually occurs in young adolescent males. This is a retrospective study of 53 patients with nasopharyngeal angiofibroma.

Endoscopic dacryocystorhinostomy with conventional instruments: results and advantages over external dacryocystorhinostomy.

Background: The aim of study is to evaluate the Endoscopic dacryocystorhinostomy (DCR) with conventional instruments, its results and advantage over external dacryocystorhinostomy (DCR).

Methods: The study group comprised of 127 patients who underwent consecutive endoscopic dacryocystorhinostomy. The cases operated by one team were included in the study to make the uniform analysis and its result.

Foreign body in tracheobronchial tree.

Inhalation of foreign body into the tracheobronchial tree is a medical emergency sometimes resulting into sudden death. The current mortality rate due to foreign body inhalation ranges from 0% to 1.8%.

External vs. internal osteotomy in rhinoplasty.

Background: The aim of study is to compare the external osteotomy vs. internal osteotomy in patients undergoing rhinoplasty.

Methods: The study group comprised of 45 patients that had undergone rhinoplasty surgery.