Fonksiyonel Değişimli Malzemelerle Kaplanmış Metal Silindirik Kabukların Serbest Titreşimi

Konferans Bildirisi -- Teorik ve Uygulamalı Mekanik Türk Milli Komitesi, 2013Conference Paper -- Theoretical and Applied Mechanical Turkish National Committee, 2013İç ve dış yüzeyleri fonksiyonel değişimli malzemelerle (FDM’ler) kaplı metal silindirik kabukların serbest titreşim problemi incelenmektedir. FDM kaplı metal silindirik kabukların temel bağıntıları ve değiştirilmiş Donnell tipi temel denklemleri türetilmekte ve Galerkin Yöntemi uygulanarak çözülmektedir. FDM kaplı metal silindirik kabukların serbest titreşiminin boyutsuz frekans parametresi için analitik ifade bulunmaktadır. Analizler kısmında, kaplamalı silindirik kabukların serbest titreşimlerinin boyutsuz frekans parametrelerinin minimum değerlerine, hacim bileşenleri değişiminin, kabuk karakteristiklerinin, iç ve dış tabakaların kalınlıkları değişiminin etkileri sayısal olarak incelenmektedir. Anahtar Kelimeler: Fonksiyonel değişimli malzeme (FDM), Fonksiyonel değişimli (FD) kaplama, metal silindirik kabuk, serbest titreşim, boyutsuz frekans parametresiThe free vibration problem of the metal cylindrical shell coated with functionally graded materials (FGMs) in the inner and outer surfaces is investigated. The basic relations and modified Donnell type basic equations of metal cylindrical shells coated with FGMs are derived and solved by using Galerkin method. Analytical expression for the dimensionless frequency parameter of the metal cylindrical shell coated with FGMs is found. Finally, the effects of variations of volume fractions, shell characteristics and variations of the thickness of inner and outer coatings on the values of the dimensionless frequency parameters of free vibrations for coated cylindrical shells are studied numerically

Pengaruh Penambahan Tepung Temukunci(boesenbergia Pandurata Roxb.) Dalam Ransum Terhadap Bobothidup, Kadar Sgot Sgpt Dan Kondisi Hati Ayam Broiler (the Effect of Fingerroot Flour Addition (Boesenbergia Pandurata Roxb.) in the Ration on Liveweight, Sgot Sg

The study aims to determine the effect of fingerroot flour addition (Boesenbergia pandu rata ROXB.) in live weight and SGOT and SGPT levels, but it does not affect the function of the liver. The experiment was conducted from November to December 2013 in the poultry house of Faculity Animal and Agricultural Sciences and analysis of rations was conducted in Nutrition Feed Laboratory. One hundred and twenty broiler (unsexed) with initial live weight of the age of 8 days (137.5 g ± 16.09 were used as material in this study and litter system in breeding is used. The study used a completely randomized design (CRD) with 5 treatments and 4 replications, each experimental unit consisted of six broiler. Parameters measured were live weight, liver weight percentage, bloodSGOT andSGPT in blood. Data was analyzed by Anova with F test probability of 5%, followed by Duncan's multiple range test if the analysis of variance showed a real treatment effect. The results showed that the addition of fingerroot does not significantly affect live weight, liver weight percentage, SGOT and SGPT(P> 0.05). Conclusion of the study is fingerroot flour additition to 2% in broiler ration does not increase live weight, neither the liver condition, SGOT and SGPT of broiler

Studi Komparasi Prestasi Belajar Siswa Menggunakan Model Pembelajaran Kooperatif Tipe Two Stay Two Stray (Tsts) dengan Numbered Heads Together (Nht) pada Pokok Bahasan Struktur Atom dan Sistem Periodik Unsur di Kelas X SMA Negeri 2 Dayun

The research about comparing cooperative learning models types Two Stay Two Stray (TSTS) with Numbered Head Together (NHT) has been done to improve student\u27s achievement on learning topic Atomic structure and periodic systems of elements at class X SMAN 2 Dayun. This research aimed to find out student\u27s achievement the better one between cooperative learning models types Two Stay Two Stray (TSTS) with Numbered Head Together (NHT) on learning topic of Atomic structure and periodic systems of elements by comparing these two models. This was a quasi experimental research with pretest-posttest design. Population on this research ware all classes X in SMAN 2 Dayun consisting of four classes. The subject of this research ware X4 as the experimental class of TSTS and X2 as the experimental class of NHT, which were determined randomly after conducting normality and homogeneity test. The data analysis to test the hypothesis was using two tail t-test. Based on the data analysis, it is obtained that tcount = 4,271 and ttable = 2,00 with α = 0,05, dk = 53. tcount ≥ ttable 4,271≥ 2,00. It means there are significant differences between the student\u27s achievement by using cooperative learning model type Two Stay Two Stray (TSTS) with the student\u27s achievement by using cooperative learning model type Numbered Head Together (NHT) on the learning topic of Atomic structure and periodic systems of elements in SMAN 2 Dayun

Faktor-faktor yang Dipertimbangkan Konsumen dalam Keputusan Pembelian Laptop Merek Acer di Kota Denpasar

Tujuan penelitian ini adalah untuk mengetahui faktor-faktor yang dipertimbangkan konsumen dalam keputusan pembelian laptop merek Acer di Kota Denpasar dan variabel yang mewakili setiap faktor-faktornya. Penelitian ini dilakukan di Kota Denpasar. Jumlah sampel yang diambil sebanyak 105 responden dengan teknik non probability sampling . Pengumpulan data dilakukan dengan metode kuisioner yang kemudian diolah menggunakan software SPSS (Statistical Package for the Social Sciences) dengan menggunakan teknik analisis faktor konfirmatori. Hasil penelitian menunjukkan bahwa faktor budaya, sosial, pribadi, psikologis dan bauran pemasaran adalah faktor yang dipertimbangkan konsumen dalam keputusan pembelian laptop merk Acer di Kota Denpasar. Variabel-variabel yang mewakili setiap faktor adalah : (1) variabel sub-budaya, (2) variablel teman , (3) variabel kepribadian diri, (4) variabel persepsi , dan (5) variabel saluran distribusi. Implikasi yang diharapkan dari penelitian ini adalah kebijakan-kebijakan pemasaran untuk konsumen sebaiknya menggunakan pendekatan-pendekatan pada faktor budaya, seperti iklan yang menampilkan bagaimana keseharian aktivitas masyarakat yang membutuhkan laptop sebagai penunjang kebutuhan sehari-hari dalam memenuhi kebutuhan teknologi dan informasi sehingga faktor budaya menjadi pertimbangan dalam memilih laptop merek Acer

A novel Multi-permittivity Cylindrical Dielectric Resonator Antenna for Wideband Applications

In this paper, a novel multi-permittivity cylindrical dielectric resonator antenna for wideband application is presented. The multi-permittivity cylinder is formed by combining two different permittivity material sectors in such a way that each sector (with constant permittivity) is 90 degree apart. A direct microstrip line coupling terminated with T-stub at the open end is used to excite the multi-permittivity cylindrical dielectric resonator. The angular position of the multi sector dielectric resonator with respect to the longitudinal axis of the microstrip line and length of the additional strip at the open end of the feeding circuit is key parameters for wideband operation of the antenna. By optimizing all parameters of the proposed antenna, wideband impedance bandwidth of 56% (12.1 GHz - 21.65 GHz) is achieved. The average gain of the antenna throughout the bandwidth is 5.9 dB with good radiation properties in both E-plane and H-plane. A well matched simulation and experimental results show that the antenna is suitable for wideband applications

Antibody Engineering for Pursuing a Healthier Future

Since the development of antibody-production techniques, a number of immunoglobulins have been developed on a large scale using conventional methods. Hybridoma technology opened a new horizon in the production of antibodies against target antigens of infectious pathogens, malignant diseases including autoimmune disorders, and numerous potent toxins. However, these clinical humanized or chimeric murine antibodies have several limitations and complexities. Therefore, to overcome these difficulties, recent advances in genetic engineering techniques and phage display technique have allowed the production of highly specific recombinant antibodies. These engineered antibodies have been constructed in the hunt for novel therapeutic drugs equipped with enhanced immunoprotective abilities, such as engaging immune effector functions, effective development of fusion proteins, efficient tumor and tissue penetration, and high-affinity antibodies directed against conserved targets. Advanced antibody engineering techniques have extensive applications in the fields of immunology, biotechnology, diagnostics, and therapeutic medicines. However, there is limited knowledge regarding dynamic antibody development approaches. Therefore, this review extends beyond our understanding of conventional polyclonal and monoclonal antibodies. Furthermore, recent advances in antibody engineering techniques together with antibody fragments, display technologies, immunomodulation, and broad applications of antibodies are discussed to enhance innovative antibody production in pursuit of a healthier future for humans

Regional travel-time residual studies and station correction from 1-D velocity models for some stations around Peninsular Malaysia and Singapore

We have investigated the average P-wave travel-time residuals for some stations around Southern Thailand, Peninsular Malaysia and Singapore at regional distances. Six years (January, 2010–December, 2015) record of events from central and northern Sumatra was obtained from the digital seismic archives of Integrated Research Institute for Seismology (IRIS). The criteria used for the data selection are designed to be above the magnitude of mb 4.5, depth less than 200 km and an epicentral distance shorter than 1000 km. Within this window a total number of 152 earthquakes were obtained. Furthermore, data were filtered based on the clarity of the seismic phases that are manually picked. A total of 1088 P-wave arrivals and 962 S-wave arrivals were hand-picked from 10 seismic stations around the Peninsula. Three stations IPM, KUM, and KOM from Peninsular Malaysia, four stations BTDF, NTU, BESC and KAPK from Singapore and three stations SURA, SRIT and SKLT located in the southern part of Thailand are used. Station NTU was chosen as the Ref. station because it recorded the large number of events. Travel-times were calculated using three 1-D models (Preliminary Ref. Earth Model PREM (Dziewonski and Anderson, 1981, IASP91, and Lienert et al., 1986) and an adopted two-point ray tracing algorithm. For the three models, we corroborate our calculated travel-times with the results from the use of TAUP travel-time calculation software. Relative to station NTU, our results show that the average P wave travel-time residual for PREM model ranges from −0.16 to 0.45 s for BESC and IPM respectively. For IASP91 model, the average residual ranges from −0.25 to 0.24 s for SRIT and SKLT respectively, and ranges from −0.22 to 0.30 s for KAPK and IPM respectively for Lienert et al. (1986) model. Generally, most stations have slightly positive residuals relative to station NTU. These corrections reflect the difference between actual and estimated model velocities along ray paths to stations and can compensate for heterogeneous velocity structure near individual stations. The computed average travel-time residuals can reduce errors attributable to station correction in the inversion of hypocentral parameters around the Peninsula. Due to the heterogeneity occasioned by the numerous fault systems, a better 1-D velocity model for the Peninsula is desired for more reliable hypocentral inversion and other seismic investigations