http://chineseinput.net/에서 pinyin(병음)방식으로 중국어를 변환할 수 있습니다.
변환된 중국어를 복사하여 사용하시면 됩니다.
Vaibhav Gandhi,Arianna Lowney,Lauren Cardarelli,Sumit Yadav,Aditya Tadinada 대한영상치의학회 2020 Imaging Science in Dentistry Vol.50 No.3
Purpose: The purpose of this study was to analyze the quantity and quality of the mandibular anterior alveolar bone in terms of alveolar width, density, and total alveolar height (TAH) based on dental status, gender, and age. Additionally, this study aimed to quantitatively evaluate the available alveolar height for graft harvesting (AHGH) and examine its variability based on the aforementioned factors. Materials and Methods: This retrospective cone-beam computed tomographic study included a total of 100 subjects. On the basis of gender, dental status, and age, the scans were divided into 3 primary groups and 8 subgroups. The mandibular alveolar width and density were measured 5 mm mesial to the mental foramen bilaterally and at the midline. The TAH was measured at the midline, and the AHGH was measured as the midline distance between 5 mm apical to the root of the canines and 5 mm superior to the lower border. Results: The mandibular alveolar width was statistically similar between dentulous and edentulous patients (P>0.05). A significantly greater density was observed at the midline in edentulous patients (P<0.05). The TAH was significantly greater in edentulous male patients than in edentulous female patients (P<0.05). Dentulous and male patients had significantly greater AHGH than edentulous and female patients, respectively (P<0.05). Conclusion: Based on the data evaluated in this study, it can be concluded that the mandibular symphyseal area has adequate bone quality and quantity for bone graft harvesting for dental implant therapy
Vaibhav Jain,Ankit Madan,Manoj Thakur,Amit Thakur 대한척추신경외과학회 2018 Neurospine Vol.15 No.4
Objective: To evaluate the results of operative management of subaxial spine injuries managed with 2-level anterior cervical corpectomy and fusion with a cervical locking plate and autologous bone–filled titanium mesh cage. Methods: This study included 23 patients with a subaxial spine injury who matched the inclusion criteria, underwent 2-level anterior cervical corpectomy and fusion at our institution between 2013 and 2016, and were followed up for neurological recovery, axial pain, fusion, pseudarthrosis, and implant failure. Results: According to Allen and Ferguson classification, there were 9 cases of distractive extension; 4 of compressive extension; 3 each of compressive flexion, vertical compression, and distractive flexion; and 1 of lateral flexion. Sixteen patients had a score of 6 on the Subaxial Injury Classification system, and the rest had a score of more than 6. The mean follow-up period was 19 months (range, 12–48 months). Neurological recovery was observed in most of the patients (78.21%). All patients experienced relief of axial pain. None of the patients received a blood transfusion. Twenty-one patients (91.3%) showed solid fusion and 2 (8.69%) showed possible pseudarthrosis, with no complications related to the cage or plate. Conclusion: Two-level anterior cervical corpectomy and fusion, along with stabilization with a cervical locking plate and autologous bone graft-filled titanium mesh cage, can be considered a feasible and safe method for treating specific subaxial spine injuries, with the benefits of high primary stability, anatomical reduction, and direct decompression of the spinal cord.
Vaibhav Rastogi,Pragya Yadav,Navneet Verma,Anurag Verma 한국약제학회 2018 Journal of Pharmaceutical Investigation Vol.48 No.3
The objective of this study was to design a novel microemulsion system for transdermal delivery of natural antimicrobial agent, i.e. bacteriophage (T4) specifically lysing E. coli bacteria. Pseudoternary phase diagrams were constructed and various formulations were prepared using a combination of ethyl oleate (oil), Tween 80:Span 20 (surfactant mixture) and water (aqueous phase). Developed formulations were subjected to physicochemical characterization, ex vivo and thermodynamic stability studies, skin irritation and histology studies. All the formulations had small droplet size (150–320nm), uniform size distribution (PI < 0.4), adequate viscosity and surface tension. 4 × 105, 6.02 × 106 and 6.7 × 106 PFU/mL was the cumulative amount of bacteriophage permeated from ME1-3, respectively. Results from permeation studies suggested the synergistic effect of oil and surfactant mixture on the permeation profile (p < 0.05), on increasing surfactant concentration with respect to oil, the bacteriophage permeation was increasing and so, the flux was increases too. ME2 was found to be thermodynamically stable, nonirritant and followed zero order kinetics. The bacteriophage viability to lyse E. coli was significantly affected at various temperatures, pH and dilution. Histological findings revealed the effect of formulation variables on the skin, necessary for permeation. These results indicate that microemulsion-based transdermal delivery of bacteriophage can be a promising approach to treat the infections caused by antibiotic-resistant bacteria but needs thorough clinical investigations.
Vaibhav Jain,Rajiv Rawat,Gulshan Sachdeva,Vikas Kumar 대한설비공학회 2020 International Journal of Air-Conditioning and Refr Vol.28 No.4
This work conceives the performance of vapor compression cascaded refrigeration system (CRS) from the exergy, safety and thermal inventory points of view employing the theory of effective temperature (T eff )Teff) than environment temperature (To) in Gouy–Stodola equation. Comparative results show that the actual irreversible loss in CRS is 8.1% higher. Further, advanced exergy analysis results showed that 17.985 kW irreversible loss (out of 33.737 kW irreversible loss) in the system is evadable with improvement in the system design. Besides, the vulnerability of toxic fluid R717 is reported in terms of the total risk level. Moreover, the economy matter is expressed in terms of its total thermal inventory. At the base case, total risk level and total thermal inventory are determined to be 454.3 US$ and 48.86 kW/K, respectively. First, sensitivity analysis is carried out to evaluate the variation in irreversible loss, total risk level and thermal inventory at different evaporator and condenser temperatures with different degrees of overlap (decision variables). A total of nine simulations are designed using the Taguchi technique. Later, multi-objective optimization is employed. The optimization process reduced the total irreversibility and annual risk level of CRS by 10.2% and 8.9%, respectively, with 6.8% increase in thermal inventory.
Effect of Linear Chirp on Strong Field Photodissociation of H_2^+
Vaibhav S. Prabhudesai,Adi Natan,Barry D. Bruner,Yaron Silberberg,Uri Lev,Oded Heber,Daniel Strasser,Dirk Schwalm,Daniel Zajfman,Itzik Ben-Itzhak 한국물리학회 2011 THE JOURNAL OF THE KOREAN PHYSICAL SOCIETY Vol.59 No.41
We report the experimental findings of a systematic study of the effect of the linear chirp on strong field photodissociation of H_2^+. For vibrational levels around or above the one photon crossing, the effect manifests in terms of a shift in the kinetic energy release (KER) peaks. The peaks shift up for negative chirp whereas they shift down for positive chirp. The measurements are carried out by varying two of the laser pulse characteristics energy, pulse intensity and linear chirp while keeping the third constant. The shifts in the KER peaks are found to be intensity dependent for a given value of chirp. However, in the last two cases, they are found to be independent of the chirp magnitude. The results are understood on the basis of saturation of photodissociation probabilities for these levels.
Vaibhav Deorao Kamble,Rambhau D. Parkhedkar,Tushar Krishnarao Mowade 대한치과보철학회 2012 The Journal of Advanced Prosthodontics Vol.4 No.1
PURPOSE: The aim of this study was to compare the flexural strength of polymethyl methacrylate (PMMA) and bis-acryl composite resin reinforced with polyethylene and glass fibers. MATERIALS AND METHODS: Three groups of rectangular test specimens (n = 15) of each of the two resin/fiber reinforcement were prepared for flexural strength test and unreinforced group served as the control. Specimens were loaded in a universal testing machine until fracture. The mean flexural strengths (MPa) was compared by one way ANOVA test, followed by Scheffe analysis, using a significance level of 0.05. Flexural strength between fiber-reinforced resin groups were compared by independent samples t-test. RESULTS: For control groups, the flexural strength for PMMA (215.53 MPa) was significantly lower than for bis-acryl composite resin (240.09 MPa). Glass fiber reinforcement produced significantly higher flexural strength for both PMMA (267.01 MPa) and bis-acryl composite resin (305.65 MPa), but the polyethylene fibers showed no significant difference (PMMA resin-218.55 MPa and bis-acryl composite resin-241.66 MPa). Among the reinforced groups, silane impregnated glass fibers showed highest flexural strength for bis-acryl composite resin (305.65 MPa). CONCLUSION: Of two fiber reinforcement methods evaluated, glass fiber reinforcement for the PMMA resin and bis-acryl composite resin materials produced highest flexural strength. Clinical implications: On the basis of this in-vitro study, the use of glass and polyethylene fibers may be an effective way to reinforce provisional restorative resins. When esthetics and space are of concern, glass fiber seems to be the most appropriate method for reinforcing provisional restorative resins.