223 research outputs found
Heterotoopne ossifikatsioon puusaliigese endoproteesimise järgselt: kliiniline ja patogeneetiline uurimus
No full textAssessment of heterotopic ossification after total hip arthroplasty. Amending the assessment system
No full textUse of Sail Excision in Alar Morphology Modification of Asian Noses
No full textGlobular hanging nasal alae, described as convex round shaped alar lobule which may be an aesthetic nuisance in the final result of rhinoplasty, are commonly seen among Southeast Asian noses. Such alar lobule morphology is an important part of nasal aesthetics and should not be disregarded. Surgical techniques used to address a hanging ala include direct external approaches. External rim excision was proposed to address hidden columella, sigmoid alae, small nostrils, dropped rim and foreshortened nose.1,2 Rim tissue was excised in full thickness fashion and sutured in one layer. Others proposed alar groove excision followed by alar repositioning and full-thickness skin grafting to reposition the alar base and correct hanging alae.3 Although these approaches have been proven to correct hanging alae, they leave a visible scar and/or permanent alar rim deformity if not done cautiously, especially on thick skinned patients.1-3 The alar rim may not be natural looking since it is lined by a scar, thus losing the lobular texture of the rim. A vestibular incision has been proposed to correct a hanging ala with unsightly scar.4 A maximum of 3mm elliptical vestibular skin was recommended to be removed to lift the alar rim with significant results. However, this recommendation was based on estimates and surgeon’s experience in western noses and may be insufficient for Asian noses. In addition, performing this technique without specific landmarks is difficult in achieving accurate results, especially when performed by a novice surgeon. Hence, further modification is important to address these concerns.
Attempting to address the hanging alae in Asian noses, the senior author (ECY) modified the vestibular incision and came up with the sail excision technique based on the patient’s nasal anatomy.5 By presenting definite landmarks, the technique resulted in an alar lift procedure with reproducible outcomes. Furthermore, after performing sail excision in several patients, the authors noted the effect of this technique on alar morphology. This procedure is done by excising a precisely marked piece of inner nasal vestibular skin that is shaped like the sail of a boat to achieve a symmetrical and redictable result. This creates a lifting effect and improves the alar columellar disproportion specially when combined with septal advancement techniques.6,7
Furthermore, limiting the excision along the inner vestibular area and rolling the alar rim skin inwards results in correction of hanging ala (with a hidden scar) without an obvious, external scar. After performing the technique on several patients, we observed that in addition to its effect on lifting a hanging ala, the sail excision technique also changes the alar morphology from a globular-shaped lobule to a more aesthetically pleasing ridge-shaped lobule. To the best of our knowledge, such an effect of sail excision on alar morphology has not been described in the literature.
This article aims to demonstrate the effect of the sail excision technique on alar rim morphology of Asian noses by describing the step-by-step procedure, surgical landmarks, and pearls in performing this technique
Keystone perforator island flap as an alternative reconstructive option for partial thickness alar defects up to 1.5centimeters
No full textIntroduction: The ala is a unique landmark of the nose disposing aesthetic and functional properties. The head and neck area is the main site of appearance of nonmelanoma skin cancer. One third of them are located in the nose with an alar preponderance compared with other nasal subunits. Correction of alar defects is a challenging reconstructive task. The keystone perforator island flap (KPIF) was introduced as an alternative in nasal reconstruction by senior authors. In the present case series, KPIFs' application is introduced into the alar subunit as an alternative, versatile, and reproducible reconstructive option, even for the novice plastic surgeon. Materials and Methods: From April 2014 to September 2015, patients presenting with partial thickness alar defects (≤1.5 cm) secondary to tumor extirpation sustained reconstruction with different types of KPIF. Results: A total of 31 patients (mean age of 72 years) were treated with various types of KPIF. The mean diameter of the defect was 1.14cm. The vast majority of reconstructions concerned a type IV KPIF (18/31 or 58.1%). Sometimes an upward alar retraction was noted. A minimal rim wedge excision was performed (≤0.3mm) using counterbalancing correcting sutures. All flaps survived without any sign of venous congestion, whereas the rim healed uneventfully. The mean follow-up period was 6.5 months. Conclusions: KPIF was introduced as a single-stage alternative reconstructive option for partial thickness alar defects, completing author's experience with this flap into such a challenging and aesthetically critical anatomic area. © 2016 by Mutaz B. Habal, MD
EXPERIMENTAL AND THEORETICAL STUDY OF THE BOUND-FREE TRANSITION OF AlAr
No full textAuthor Institution: A. A. Noyes Laboratory of Chemical Physics, California Institute of Technology; Air Force Research Laboratory, OLAC PLIRKSThe state of AlAr has been observed by both 1+1 and 2+1 resonant multiphoton ionization from the state. The G state is a dissociative state resulting in a broad but asymmetric band peaked at , detectable by action spectroscopy upon one- and two-photon absorption. The atomic Al 3p-4p transition is forbidden, and molecular AlAr transitions between states arising from these states are primarily two-photon in character due to the weak mixing of Al-atom configurations. Simulations of both the one- and two-photon bands using ab initio potential curves and dipole moment functions calculated by MR-Cl methods are in good agreement with observations
An analysis of three newsweeklies covering food safety issues during the 1989 Alar chemical scare
No full textThis study analyzes and compares editorial opinions and reporting strategies of three newsweeklies during the 1989 Alar chemical scare. The author seeks to determine if selected press coverage of the 1989 controversy was accurate and impartial or, as some media critics charge, reflected a negative news bias resulting from reckless reporting, misplaced values, journalistic perceptions, or a willing participation in advancing the special-interest agenda of environmental and consumer advocacy groups (Rosen, 1990). Using a directional approach to thematic content analysis, the author evaluates coverage in Time, Newsweek, and U.S. News & World Report, and compares this coverage to what is considered by Neilson (1973) and others (Katz, 1992) to be the in-depth, balanced reporting style of the Wall Street Journal. Citing source selection, hyperbole, metaphorical devices and the frequency of negative themes and assertions, the author maintains that some articles reflect journalists\u27 personal biases and perceptions of public attitudes surrounding the chemical controversy. The author concedes, however, that the seemingly negative slant and hyperbolic distortion in selected articles may in part be the result of time constraints placed on reporters, complexity of the subject, lack of scientific background needed to competently assess conflicting information, and difficulty in finding reliable and impartial sources for information. With data gleaned from this study and public opinion polls conducted following release of the 1989 Alar report, the author asserts that some coverage did indeed reflect a negative slant, and was tarnished by what seemed an anti-chemical bias. The negative nature of some reports, the author contends, was largely generated by a vocal cadre of environmental and consumer activists, and was buoyed by an effective public relations campaign that appeared bent on eliminating or greatly curtailing the use of agricultural chemicals. The author cautions that the seemingly cavalier approach taken by some reporters has the potential to further damage media credibility and widen the schism which some press scholars feel exists between the scientific and journalistic communities (Salomone, Greenberg, Sandman and Sachsman, 1990). In conclusion, the author echoes the criticism of others who contend that many journalists and the publications they work for are more interested in simply getting a good story than getting the facts. Exhaustive research and a commitment to fairness are the essential elements needed to enhance credibility and distance reporting from emotional advocacy
Alumise hüppeliigese ehk subtalaarliigese artroskoopiliselt assisteeritud artrodees
No full textAlumise hüppeliigese ehk subtalaarliigese osteoartoos on suhteliselt harva esinev probleem, kuid see mõjutab patsiendi elukvaliteeti oluliselt. Subtalaarliigese osteoartroosist põhjustatud probleeme ravitakse nii konservatiivsete kui ka operatiivsete meetoditega. Sageli on kirurgiline ravilahendus ainuvõimalik hea või väga hea lõpptulemuse saavutamiseks. Lahtine operatsioon on osteoartroosiga patsientidel alumise hüppeliigese artrodeesi valikmeetod olnud aastakümneid. Miniinvasiivse kirurgia kiire arengu käigus on leitud, et artroskoopiliselt assisteeritud subtalaarliigese artrodees on kujunemas tõhusaks valikmeetodiks subtalaarliigese artroosi ravis. Tartu Ülikooli Kliinikumis on aastatel 2016–2017 ravitud artroskoopiliselt assisteeritud artrodeesiga kokku 4 subtalaarliigese osteoartroosiga patsienti. Kõikides opereeritud liigestes toimus radioloogilise uuringu alusel luustumine 8–10 nädala jooksul. Kirurgilise raviga seotud tüsistusi ei esinenud. Kõik patsiendid pöördusid tagasi aktiivse füüsilise tegevuse juurde. Tuginedes positiivsetele tulemustele mujal maailmas, võime ka meie väikese rühma puhul kinnitada selle metoodika efektiivsust
Implementation of 5S organizing methodology in car service using example of Gekkon Service OÜ
No full textKäesolev töö on koostatud 2017.aasta kevadsemestril. Töö eesmärk oli katseliselt tõestada võimalust tõsta efektiivsus 10% võrra 5S süsteemi rakendades. Käesoleva töö esimeses peatükkis autor tutvustas 5S organiseerimismetoodika olemuse ja tutvustas ettevõtet, milles viidi läbi töö kolmandas peatükkis kirjeldatud katsed. Teises peatükkis autor uuris teiste ettevõttete kogemust 5S süsteemi juurutamisel, ning uuris ka ärijuhtimise teadlaste interpretatsioone 5S süsteemist. Teise peatükki uurimistöö tulemusel on valminud 5S süsteemi juurutamise plaan autoteeninduspunktis. Kolmandas peatükkis autor kirjeldas teostatud katseid, esitas katsete tulemusi, ning nende analüüsi, ning tegi järeldusi 5S metoodika praktilisest väärtusest. Töö käigus oli katseliselt ära testitud 5S organiseerimismetoodika autoteeninduspunktis. Katsealuseks ettevõtteks oli Gekkon Service OÜ, kus läbi viidud katsetused tõestasid 5S süsteemi praktilise väärtuse ettevõttele ja selle töötajatele. Katsetamise käigus oli testitud 5S organiseerimissüsteemi mõju enam kui 30-le rutiinsele autoteeninduspunkti operatsioonile, ning valdav osa rutiinidest sai 5S-i rakendades muuta efektiivsemaks. Keskmine operatsiooniaja lühenemine oli silmapaistev – 8,7%, mis tõestab töö hüpoteesi, et 5S protsessi- ja kvaliteedijuhtimise süsteem aitab autoteenindusettevõttel tõsta ajakasutuse efektiivsust ja majandusliku efektiivsust. Autor on seisukohal, et 5S süsteemi juurutamine ja rakendamine saab olema kasulik nii katselausele ettevõttele Gekkon Service OÜ, kui ka teistele autoteenindusettevõttetele. Kuna käesoleva lõputöö maht ja tudengi staatus ei võimalda autoril teostada laiapõhjalisemaid uuringuid antud valdkonnas kaasates erinevaid ettevõtteid, ning juurutades 5S süsteemi põhjalikult ja täielikult, hilisema võimalusega uurida ettevõtte käitumist järgnevates majandusperioodides, siis nii uuring, kui tehniline lahendus on jäänud poolikuks. Autor ei välista võimalust, et tulevikus ta jätkab teemakohast uuringut ja tehnilise lahenduse välja töötamist oma töökohal või edasistes õpingutes. Uuringu järgmise sammuna tuleks koostada SOP-id kõigile normeeritud rutiinsetele operatsioonidele, võttes aluseks kõige kiiremini töötavate automehaanikute ja autolukkseppade käitumismustrit.This thesis has been created at the 2017 spring semester. The goal of thesis was to prove if the productivity could be raised 10% using the 5S system. The author of present thesis introduced in the first chapter the character of 5S organising method and the company where tests, which are described in the third chapter, were conducted. The author of thesis examined in the second chapter how other companies have used 5S system and business management researcher’s interpretations about the 5S system. The result of second chapter of present thesis is the plan how to implement 5S system in the auto service facility. The author of present thesis described in the third chapter conducted tests, the results of tests and their analysis and conclusions about practical value of 5S method. During the research, 5S organising method was tested in the auto service facility. The examined company was Gekkon Service OÜ, where conducted tests proved that 5S system has a practical value to company and its employees. The effect of 5S organising method to more than 30 routine activity of the auto service facility was tested during the research and 5S added more productivity to the most of activities. The shortening of average time spent to the activity was impressive – 8,7%. This proves the hypothesis of thesis, which is that the 5S process and quality management system helps to raise the productivity of auto service facility in regards of time and economy. The author concludes that implementing and conducting 5S, system can be useful to both the tested company Gekkon Service OÜ and other auto service facilities. While the quantity of present thesis and the status of student is not allowing the author to conduct wider consultation among different companies that are active in the present field and implement 5S system thoroughly and fully in order to examine company’s behaviour during the following economic periods, then the research and technical solution is in unfinished status. The author does not foreclose that the exploration of this topic and development of technical solution in the place of work or during further studies shall continue in the future. The next step of research should be the creation of SOP for all usual routine activities according to the behaviour of the fastest motor mechanic and panel beaters
Audi A4 sound dampening problems and solutions
No full textAutori eesmärgiks oli sõiduauto Audi A4 salongimüra vähendamine luksuslikema autode tasemele, kas see on võimalik ning mida peaks selle jaoks tegema. Lõputöö teooriaosas selgitas töö autor heli omadusi, võrdles erinevaid helisid ja mürasid, selgitas kuidas mõõdetaks mürataset autos ja autost väljapool ning jagas erinevad müraallikad erinevateks sõlmedeks. Lõputöö käigus seletati lahti mürasummutuse olemus, mattide omadused ja paigaldusviisid. Seejärel võttis autor erinevatest heli- ja autoaudioga tegelevatest ja mürasummutusega tegelevatest ettevõtetest hinnapakkumisi. Hinnapakkumised on välja toodud esimeses lisas (Lisa 1[8 p.46;47]). Vastavalt kogusele, kvaliteedile ja hinnale, valis autor endale sobivaima, milleks osutus esimene pakkumine. Materjalidele sai kaubeldud ka allahindlus ning koguhinnaks kujunes 405€. Mürasummutusmattide hulgas oli nii bituumenil põhinevaid ja alumiiniumiga kaetud matte kui ka kergemaid porolooni baasil materjale. Bituumenmatid jagunesid kaheks paksuse järgi. Poroloonbaasil materjalid jagunesid kaheks aga üks tihedama struktuuri ja lameda pinna ning teine munaresti kujulise ja õhulisema struktuuriga materjalideks. Autor teostas paigaldused eelnevalt valitud autosse, jagades auto pinnad viieks erinevaks sõlmeks alustades paigaldusjärjekorrast: uksed, pagasiruum ja tagumised rattakoopad, põrand, kapott ja esimesed rattakoopad, lagi. Ennem paigaldusi ning peale igat paigaldust teostati mõõtmised salongi sisemüra taseme hindamiseks. Mõõtmiseks kasutati teooriaosas kirjeldatud viise ning mõõdeti Velleman’i seadmega, mille spetsifikatsioonid on toodud lisa kahes (Lisa 2 [8 p. 48]). Saadud tulemused on toodud joonistel 5.10.1 ja 5.10.2, kus selgub, et müratase olulisematel tingimustel nagu tühikäik, langes ees 11,3 dB ja taga 6 dB ning kiirusel 90 km/h ees 4,1 dB ja taga 5,1 dB. Samuti on autor ära märkinud katse toimumise koha ning ilmastikutingimused, mis võivad mõjutada saadud tulemusi. Müratase väljaspool autot jäi samaks. Majanduslikust aspektist toob autor välja, et 2015a. IV kvartali keskmise brutopalga järgi tunde arvestades liites sellele materjalikulu, tuleb töö ise tehes peaaegu poole soodsam. Sissejuhatuses püstitatud hüpotees ei pidanud paika. Müratase oleks pidanud veel sama palju vähenema. Autor ise on siiski tulemusega rahul, sest saadud tulemused vähendasid müra inimkõrva jaoks peaaegu poole võrra, mõneti isegi rohkem.The goal of this thesis was to reduce interior noise on Audi A4 to the level of more luxurious cars. Is it possible and what has to be done to achive that. In the theoretical part of the thesis, the author explains sound attributes, compares them , explains how noise is measured on the inside and outside of a car and divides them into different categories. In the thesis, the author writes about what noise is, how can it be dampened with mats and how to install them. After that, the author collected different information and biddings. The biddings are available in the first extra (Lisa 1 [8 p.46;47]). According to amount, quality and price, the author chose the best available materials. The materials cost 405 € with 10% discount. There were both, bitumen covered with aluminium and polyrethane foam based materials. Bitumen mats divide into two by thickness and polyrethane foam mats also into two by the construction of the material Author installed dampening mats into previously chosen car, dividing different surfaces of a car into five starting from the installation order: doors, trunk and rear wheel arches, floor, bonnet and front wheel arches, roof. Before and after every installation, the author measured the interior noise of the car including starting level. Measurements were done as described previously, using Vellemans device, which specifications are brought up in the second extra (Lisa 2 [8 p.48]). The results are available on the diagram 5.10.1 and 5.10.2, where it can be seen, that two most significant dampening results are on the idle on front -11,3 dB and on the back -6 dB , on average speed 90 km/h 4,1 dB front and 5,1 dB back. Also, author has noted where the tests were done, what was the weather like and other reasons which could affect the result. Noise level outside the car stayed same. From economicalaspect, the author shows that you can cut the prices into half by doing it yourself. The hypothesis introduced in introduction were not accomplished. The noise level would had to decreased the same amount as it already did. Even though, the author is pleased with results. The noise levels were reduced more than half for human ear. The car is now much more quieter and comforable to drive
SRP-22 ALAR FOX: Fall DSE 2022: Regional Passenger Transport
No full textAE3200 - Design Synthesis ExerciseAerospace Engineerin
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