Correção do nariz desviado utilizando spreader graft no lado convexo do desvio

O nariz desviado é resultado de um conjunto de alterações anatômicas e por isso existe um grande número de técnicas para sua correção, sendo que um único método não deve ser utilizado em todos os casos. OBJETIVO: Avaliar um novo método para a correção destas deformidades, o uso do spreader graft no lado convexo do nariz desviado. FORMA DE ESTUDO: Prospectivo. MATERIAL E MÉTODO: Seis pacientes com nariz desviado foram submetidos à rinoplastia com colocação de spreader graft no lado convexo do desvio nasal e acompanhados por um período de 2 anos. RESULTADOS: Todos os pacientes apresentaram melhora da estética facial. Conclusão: Este estudo mostrou ser possível utilizar o spreader graft no lado convexo do desvio nasal em casos específicos.

Sprinkle Treatment (Bristowes Spreader), HR-512

Safety is an important aspect of highway design. Texture and frictional properties are important characteristics in providing safe roadways. Longevity of desirable frictional properties is highly dependent on the aggregate within asphalt pavement. Iowa unfortunately has areas of the State where the locally available aggregate will not give long lasting desirable frictional properties. Iowa has utilized sprinkle treatments to improve the safety of many new asphalt concrete pavements.

BONE SPREADER TECHNIQUE: A PRELIMINARY 3-YEAR STUDY

The purpose of this study was to observe the clinical outcome of bone spreading and standardized dilation of horizontally resorbed bone during immediate implant placement using a "screw-type" configuration of expansion and threadformers. Fifty-three patients were included in this study, and 41 edentulous areas in anterior and posterior maxillas were treated. Sixty-eight implants were placed using an insertion torque of at least 40 Ncm. Abutments were delivered 4 to 6 months after implant placement. The overall failure percentage was 4.41% (3 failures). A retrieved analysis of I implant removed at 3 years after placement demonstrated bone resorption down to the level of the third thread. The bone spreader technique is different from Summers' osteotome, both in clinical use and in armamentarium. The main advantage of the crest-expanding technique is that it is a less invasive procedure; the facial wall expands after the medullary bone is compressed against the cortical wall. Within the limits of this preliminary study, the cumulative survival rate for this method of implant placement is 95.58% at 3 years. This study confirms that a bone spreader used in the maxilla shows an unusually low failure rate after 3 years.

Influence of the gutta-percha taper and finger spreader on lateral consensation effectiveness

Introduction: Lateral condensation effectiveness may be influenced by the gutta-percha and finger spreader taper used during root canal obturation. Objective: To evaluate the penetration ability of finger spreader into simulated root canals prepared using MTwo rotary system and filled with different gutta-percha and finger spreader tapers. Material and methods: Resin blocks with curved root canals had the apical diameter enlarged up to #25.06 and distributed into groups (n = 6) according to the gutta-percha taper (#25.02, #25.04, and #25.06) and the finger spreader (#30 and #35 NiTi, and stainless steel B) used to perform cold lateral condensation. After applying a load of 1.5 Kg over the finger spreaders’ head, the distance between the finger spread tip and the apical limit of the root canal preparation were obtained. The data were submitted to Anova and Tukey-Krammer’s test, with 5% of significance. Results: The gutta-percha cones with 0.02 taper enabled higher finger spreader penetration when compared to 0.04 and 0.06 tapers (p < 0.05), which were similar between each other (p > 0.05), regardless of the type and diameter of the finger spreader used. When different finger spreaders were compared among themselves, stainless steel B showed higher penetration ability (p < 0.05). Conclusion: It was concluded that the stainless-steel finger spreaders showed superior penetration ability and gutta-percha with lower tapers enabled a more effective lateral condensation at the apical third.

Operator's manual : spreader, aggregate; towed, force feed; pneumatic tires; 8-ft. width (Burch Corp model FF-8), FSN 3895-130-3633.

"May 1971."

Spreader, sand, towed-type, traction-powered, with wing gate and safety seat, Flink model SS.

"O-222192"--P. [13].

Organizational, direct support and general support maintenance repair parts and special tools lists : spreader, aggregate, towed; 8 ft. spread, Garwood model M5-8FT serial numbers 101 thru 200 and 201 thru 374, NSN 3895-00-836-7324.

Includes index.

Operator, organizational, field, and depot maintenance manual : spreader, aggregate, towed, 8 ft spread (Garwood model M5-8 ft), serial numbers 101 thru 200, FSN 3895-836-7324.

"October 1961."

Unit, direct support, and general support maintenance repair parts and special tools lists : spreader, aggregate, towed; 8 ft. spread, Garwood model M5-8FT serial numbers 101 thru 200 and 201 thru 374, NSN 3895-00-836-7324.

"June 1992."

Organizational, direct support and general support maintenance manual : spreader, aggregate, towed, force feed, pneumatic tires, 8-ft. width (Burch Corp model FF-8), FSN 3895-130-3633.

"June 1971."

Operator, organizational, direct support, general support, and depot maintenance manual : spreader, aggregate, towed-type, traction powered, highway model R, FSN 3895-436-2835.

"21 June 1973"--Change no. 1.

Rumor Propagation Model: An Equilibrium Study

Compartmental epidemiological models have been developed since the 1920s and successfully applied to study the propagation of infectious diseases. Besides, due to their structure, in the 1960s an interesting version of these models was developed to clarify some aspects of rumor propagation, considering that spreading an infectious disease or disseminating information is analogous phenomena. Here, in an analogy with the SIR (Susceptible-Infected-Removed) epidemiological model, the ISS (Ignorant-Spreader-Stifler) rumor spreading model is studied. By using concepts from the Dynamical Systems Theory, stability of equilibrium points is established, according to propagation parameters and initial conditions. Some numerical experiments are conducted in order to validate the model.

Factors affecting the establishment and dispersal of nymphs of Pristhesancus plagipennis Walker (Hemiptera : Reduviidae) when released onto soybean, cotton and sunflower crops

A problem with augmenting predatory bugs through mass release is the logistical difficulty of delivering nymphs onto the foliage of field crops. In this paper we examine postrelease establishment and dispersal of the nymphs of the predatory bug Pristhesancus plagipennis on soybean, cotton and sunflower in an effort to devise an appropriate strategy for field release. The effects of predator stadia and release rates on field establishment and within-crop-canopy dispersal after hand release were recorded in soybean, cotton and sunflower. Field establishment improved with the release of more-developed nymphs, with third instars providing the most appropriate compromise between field hardiness and rearing cost. Increased nymphal density at the point of release had little effect on nymphal dispersal throughout the crop canopy. The patterns of nymphal dispersal observed on the three crops suggest that crop-canopy architecture may have an effect on the ability of nymphs to spread out postrelease, as nymphs dispersed poorly in cotton and sunflower compared to soybean. To overcome poor dispersal of nymphs after release, a mechanical release method, where nymphs were mixed with vermiculite and delivered onto a target crop through a spinning disk fertiliser spreader, was tested, and provided similar nymph establishment rates and dispersal patterns as releasing nymphs individually by hand. The implications of nymph dispersal and field hardiness in regard to inundative field release techniques are discussed.

Evaluation of 1977 Asphalt Concrete Sprinkle Treatments, December 1980

Iowa's first sprinkle treatment in 1974 was applied to a short section of old US 30 west of Ames. A roll type seal coat spreader was used to apply several types of sprinkle aggregates. The following year a spinner type tailgate spreader was used for sprinkle application of an Iowa 7 project in Webster County. Uniform spreading and tire marks were problems in these early projects. A special spinner spreader was built in 1976 and mounted on a truck specially equipped with smooth tires. This special unit was tested in early 1977 on a project that had been scheduled for 1976. Spinner type spreaders proved unacceptable due to non-uniformity of spreading.