Anterolateral ligament reconstruction protects the repaired medial meniscus: a comparative study of 383 anterior cruciate ligament reconstructions from the SANTI study group with a minimum follow-up of 2 years

Background: The prevalence of osteoarthritis after successful meniscal repair is significantly less than that after failed meniscal repair. Study Design: Cohort study; Level of evidence, 3. Purpose: The aim of this study was to determine whether the addition of anterolateral ligament reconstruction (ALLR) confers a protective effect on medial meniscal repair performed at the time of anterior cruciate ligament reconstruction (ACLR). Methods: Retrospective analysis of prospectively collected data was performed to include all patients who had undergone primary ACLR with concomitant posterior horn medial meniscal repair through a posteromedial portal between January 2013 and August 2015. ACLR autograft choice was bone–patellar tendon–bone, hamstring tendons (or quadrupled hamstring tendons), or quadrupled semitendinosus tendon graft with or without ALLR. At the end of the study period, all patients were contacted to determine if they had undergone reoperation. A Kaplan-Meier survival curve was plotted, and a Cox proportional hazards regression model was used to perform multivariate analysis. Results: 383 patients (mean ± SD age, 27.4 ± 9.2 years) were included with a mean follow-up of 37.4 months (range, 24-54.9 months): 194 patients underwent an isolated ACLR, and 189 underwent a combined ACLR + ALLR. At final follow-up, there was no significant difference between groups in postoperative side-to-side laxity (isolated ACLR group, 0.9 ± 0.9 mm [min to max, –1 to 3]; ACLR + ALLR group, 0.8 ± 1.0 mm [min to max, –2 to 3]; P = .2120) or Lysholm score (isolated ACLR group, 93.0 [95% CI, 91.3-94.7]; ACLR + ALLR group, 93.7 [95% CI, 92.3-95.1]; P = .556). Forty-three patients (11.2%) underwent reoperation for failure of the medial meniscal repair or a new tear. The survival rates of meniscal repair at 36 months were 91.2% (95% CI, 85.4%-94.8) in the ACLR + ALLR group and 83.8% (95% CI, 77.1%-88.7%; P = .033) in the ACLR group. The probability of failure of medial meniscal repair was >2 times lower in patients with ACLR + ALLR as compared with patients with isolated ACLR (hazard ratio, 0.443; 95% CI, 0.218-0.866). No other prognosticators of meniscal repair failure were identified. Conclusion: Combined ACLR and ALLR is associated with a significantly lower rate of failure of medial meniscal repairs when compared with those performed at the time of isolated ACLR

Greener Method to Obtain a Key Intermediate of Vitamin E over Cu-ZSM-5

The catalytic oxidation of 2,3,5-trimethylphenol was performed over transition metals modified ZSM-5 zeolites employing hydrogen peroxide as oxidant under mild reaction conditions. Catalysts samples were characterized by several techniques (XRD, FTIR, BET, AA) and cristallinity and orthorhombic symmetry were confirmed for all of them. Best catalytic results were obtained for Cu-ZSM-5 sample, so further activity studies were done over this material. 2,3,5-trimethyl-1,4-benzoquinone was obtained as the main product of the selective oxidation. Reaction parameters (nature of the solvent, hydrogen peroxide concentration, reaction time, catalyst mass, substrate initial concentration and reaction temperature) were evaluated to reach the optimum reaction conditions. According to the obtained results, an apparent activation energy of 52.33 kJ/mol was calculated.Fil: Saux, Clara. Consejo Nacional de Investigaciones Cientificas y Tecnicas. Centro Cientifico Tecnologico Cordoba. Centro de Investigacion y Tecnologia Quimica; Argentina. Universidad Tecnologica Nacional. Facultad Regional Cordoba; ArgentinaFil: Renzini, Maria Soledad. Consejo Nacional de Investigaciones Cientificas y Tecnicas. Centro Cientifico Tecnologico Cordoba. Centro de Investigacion y Tecnologia Quimica; Argentina. Universidad Tecnologica Nacional. Facultad Regional Cordoba; ArgentinaFil: Gómez, Silvina. Consejo Nacional de Investigaciones Cientificas y Tecnicas. Centro Cientifico Tecnologico Cordoba. Centro de Investigacion y Tecnologia Quimica; Argentina. Universidad Tecnologica Nacional. Facultad Regional Cordoba; ArgentinaFil: Pierella, Liliana Beatriz. Consejo Nacional de Investigaciones Cientificas y Tecnicas. Centro Cientifico Tecnologico Cordoba. Centro de Investigacion y Tecnologia Quimica; Argentina. Universidad Tecnologica Nacional. Facultad Regional Cordoba; Argentin

COMPARATIVE ANALYSIS OF SHELL AND TUBE TYPE HEAT EXCHANGER WITH EFFECT OF HELICAL BAFFLES AND NANO FLUID: A REVIEW

In shell and tube type heat exchanger, the thermal performance and pressure drop are dependent on the type of fluid flow and type of baffles used in it.Inorder to improve the efficacy of heat exchangers, Nano fluidsare recently employed as coolants in them.Regarding unique characteristics of Nano fluids, research studies in this area have witnessed a remarkablegrowth.This paper presents the simulations carried out on different baffle i.e. helical baffles and different type of fluid i.e. Nano fluid and water. This shows the effect of baffles on heattransfer of fluid in shell and tube heat exchanger. Single segmental baffles show the formation of dead zones where heat transfer cannot do properly. Double segmental baffles reduce the vibrational damage to system as compared to single segmental baffles.The use of helical baffles can decrease in pressure drop by the elimination of dead zones. The less dead zones result in high heat transfer. The helical baffles can create the turbulence flow, which increase heat transfer rate, which increases the overallefficiency of the system.In this paper we will comparatively study of shell and tube type heat exchanger with Nano fluid and water on different mass flow rates

COMPARISON OF EFFICACY AND SAFETY OF ORMELOXIFENE AND CYCLICAL PROGESTERONE (NORETHISTERONE) IN OVULATORY ABNORMAL UTERINE BLEEDING

Objective-To determine the efficacy and safety  of ormeloxifene versus progesterone in controlling Ovulatory Abnormal Uterine Bleeding(AUB-O) Methods-A Prospective Randomized comparative study of total 100 females of reproductive age group 25 to 45 years with AUB-O.Patients were randomly divided in two groups of 50 each. Results-The study showed ormeloxifene was found to be more effective and safe than Norethisterone in AUB-O. Ormeloxifine as compared to norethisterone is more effective in improving Hb and reducing endometrial thickness. Hence, ORM is more superior than Norethisterone Conclusion-In this study ormeloxifene was found to be more effective in reducing blood loss,that leads to improvement in mean haemoglobin and also it had more ability to reduce endometrial thickness.As both ormeloxifene and norethisterone are very effectivebut ormeloxifene is safe , cost effective ,nonsteroidal, non hormonal drug with convenient dosage and better compliance for medical management of AUB-O.Hence, ormeloxifene canbe considered as first drugs in the management of AUB-O

Hazard Perception Based on Safety Words and Colors: An Indian Perspective

Globalization and trade among developed and developing countries has increased the need of risk communication at the workplace. The purpose of this study was to examine differences in risk communication and perception in various countries. It looked at hazard perception associated with colors and safety words among Indian industry workers. Fifty workers participated in the study focused on hazard rating of 9 safety words and 7 colors. In one part of the study the participants were asked to associate colors with safety words through recalling them from their long-term memory; in another they were asked to associate safety words with given colors. The results showed that certain words and colors implied different hazard rating at the workplace. The rank ordering of safety words and colors varied significantly in different countries. Hence population factors should be taken into consideration when designing standards for hazard communication

Comparative Analysis of Shell and Tube Type Heat Exchanger with Effect of Helical Baffles and Nano Fluid: A Review

In shell and tube type heat exchanger, the thermal performance and pressure drop are dependent on the type of fluid flow and type of baffles used in it.Inorder to improve the efficacy of heat exchangers, Nano fluidsare recently employed as coolants in them.Regarding unique characteristics of Nano fluids, research studies in this area have witnessed a remarkablegrowth.This paper presents the simulations carried out on different baffle i.e. helical baffles and different type of fluid i.e. Nano fluid and water. This shows the effect of baffles on heattransfer of fluid in shell and tube heat exchanger. Single segmental baffles show the formation of dead zones where heat transfer cannot do properly. Double segmental baffles reduce the vibrational damage to system as compared to single segmental baffles.The use of helical baffles can decrease in pressure drop by the elimination of dead zones. The less dead zones result in high heat transfer. The helical baffles can create the turbulence flow, which increase heat transfer rate, which increases the overallefficiency of the system.In this paper we will comparatively study of shell and tube type heat exchanger with Nano fluid and water on different mass flow rates