Penerapan Model Kooperatif Tipe Two Stay Two Stray (Tsts) terhadap Kemampuan Komunikasi Matematis

Penelitian ini bertujuan untuk menguji apakah terdapat perbedaan kemampuan komunikasi matematis antara mahasiswa yang belajar menggunakan model kooperatif tipe TSTS dengan mahasiswa yang belajar menggunakan metode konvensional. Jenis Penelitian ini adalah penelitian Quasi Eksperimental Design. Desain yang digunakan adalah Pretest-Postest Control Group Design. Hasil penelitian menunjukan bahwa perbedaan rata-rata menggunakan uji t pada a=0,05 diperoleh thitung= 2,32 dan ttabel = 2,00 sehingga thitung< ttabel  tidak terpenuhi. Dengan demikian dapat disimpulkan bahwa terdapat perbedaan kemampuan komunikasi matematis antara mahasiswa yang belajar menggunakan metode model kooperatif tipe TSTS dengan mahasiswa yang belajar menggunakan metode konvensiona

Analisa Landsat 5 Dan Srtm Untuk Identifikasi Struktur Geologi Sebagai Langkah Awal Penentuan Lokasi Potensi Cebakan Hidrokarbon Di Sebagian Pantura Jawa Tengah

Eksplorasi awal penentuan potensi cebakan hidrokarbon sebelumnya banyak dilakukan dengan menggunakan survei langsung atau terestrial yang banyak memakan waktu dan biaya. Penggunaan citra optik penginderaan jauh dan model ketinggian atau permukaan bumi digital mulai meningkat, sebagai jawaban terhadap kebutuhan untuk penilaian yang lebih akurat dan efisien pada tahapan tersebut. Tujuan dari penelitian ini adalah untuk mengevaluasi beberapa teknik pengolahan citra seperti band ratio, Principal Component Analysis (PCA), komposit false color, dan fusi citra yang menggabungkan Landsat 5 TM dengan SRTM untuk memberikan informasi sebagai dasar penentuan lokasi potensi cebakan hidrokarbon di sebagian Pantura Jawa Tengah. Penelitian ini menggunakan pendekatan analisis medan berupa informasi morfologi dan struktur geologi, yang diinterpretasi secara visual dan dilakukan cek lapangan. Hasil interpretasi kemudian dilakukan validasi menggunakan sumur minyak dan gas dan data seismik. Hasil penelitian menunjukkan bahwa band ratio dapat membantu dalam mengidentifikasi kandungan mineral permukaan, sedangkan PCA dapat digunakan untuk mengidentifikasi jenis tutupan lahan dan pola kelurusan. Komposit false color saluran 457 (RGB) baik digunakan untuk interpretasi batuan dan struktur geologi, sedangkan fusi semua teknik pengolahan citra dengan DSM dapat digunakan untuk menentukan struktur geologi, jenis dan batas batuan. Penelitian ini menghasilkan empat area potensi cebakan hidrokarbon yang dikategorikan sebagai cebakan antiklinal. Integrasi dengan sumur minyak dengan gas menunjukkan tiga dari empat area potensi yang diidentifikasi dari citra terdapat sumur migas, sementara integrasi dengan data seismik menunjukkan bahwa dua lokasi interpretasi yang dilintasi jalur seismik menunjukkan bentukan cebakan hidrokarbon. Hal ini juga menunjukkan bahwa interpretasi citra memberikan hasil yang baik dan dapat digunakan untuk pemetaan geologi dalam eksplorasi awal sebagai dasar penentuan potensi cebakan hidrokarbon

Evaluasi Jiwa Kepemimpinan Santri Ditinjau dari Kepemimpinan Kenabian

This study aimed to describe the evaluation of leadership skills of students in terms of the prophetic leadership. in addition, this study aimed to analyzethe problem in evaluating leadership qualities of students.Subjects in this study were active students at boarding school Raudhatul Muttaqien (PPRM) St. Cangkringan KM 14 Babadan Purwomartani Kalasan, Sleman, Yogyakarta academic year 2014/2015. These students attending Madrasah Tsyanawiah and Madrasah Aliyah Raudhatul Muttaqien, aged 12-18 years and active in the organization. This study uses data collection techniques using interviews and observations.Results ofstudies have provided an understanding that the process of learning the prophetic leadership students do not stop at the time at PPRM course, but the processs will continue until the end of life. In general, it is known that the learning process prophetic leadership has been going well, althoughthere areconstraints thatare found but it is not a significant problem.Keynote: Leadership Skills, Students , Prophetic Leadershi

Comparison of the restriction enzyme profiles of herpesvirus isolates from captive wildlife

Herpesvirus has been commonly isolated from captive wildlife in animal sanctuaries. Other then identification of the virus, attempts to trace the origin of the virus were initiated based on DNA restriction enzymes (RE) analysis. Two isolates from gaurs (UPMV4/05, UPMV5/05) and an isolate from a Malayan sun bear (UPMV19/05) were examined for a homologous relationship among them. As expected, the DNA from UPMV4/05 and UPMV5/05 showed close RE similarity in comparison to UPMV19/05. The RE patterns from this herpesvirus isolates indicate a possible evolution from the same origin, bovine herpes virus (BHV). The present study showed the DNA of isolates UPMV4/05, UPMV5/05 and UPM19/05 to have an average molecular weight 0f 112x10⁶ Dalton

Multisystem proteinopathy due to a homozygous p.Arg159His VCP mutation : a tale of the unexpected

ObjectiveTo assess the clinical, radiologic, myopathologic, and proteomic findings in a patient manifesting a multisystem proteinopathy due to a homozygous valosin-containing protein gene (VCP) mutation previously reported to be pathogenic in the heterozygous state.MethodsWe studied a 36-year-old male index patient and his father, both presenting with progressive limb-girdle weakness. Muscle involvement was assessed by MRI and muscle biopsies. We performed whole-exome sequencing and Sanger sequencing for segregation analysis of the identified p.Arg159His VCP mutation. To dissect biological disease signatures, we applied state-of-the-art quantitative proteomics on muscle tissue of the index case, his father, 3 additional patients with VCP-related myopathy, and 3 control individuals.ResultsThe index patient, homozygous for the known p.Arg159His mutation in VCP, manifested a typical VCP-related myopathy phenotype, although with a markedly high creatine kinase value and a relatively early disease onset, and Paget disease of bone. The father exhibited a myopathy phenotype and discrete parkinsonism, and multiple deceased family members on the maternal side of the pedigree displayed a dementia, parkinsonism, or myopathy phenotype. Bioinformatic analysis of quantitative proteomic data revealed the degenerative nature of the disease, with evidence suggesting selective failure of muscle regeneration and stress granule dyshomeostasis.ConclusionWe report a patient showing a multisystem proteinopathy due to a homozygous VCP mutation. The patient manifests a severe phenotype, yet fundamental disease characteristics are preserved. Proteomic findings provide further insights into VCP-related pathomechanisms

A Parametric Investigation on the Neo-Hookean Material Constant

This paper assesses the Neo-Hookean material parameters pertaining to deformation behaviour of hyperelastic material by means of numerical analysis. A mathematical model relating stress and stretch is derived based on Neo-Hookeans strain energy function to evaluate the contribution of the material constant, C1, in the constitutive equation by varying its value. A systematic parametric study was constructed and for that purpose, a Matlab programme was developed for execution. The results show that the parameter (C1) is significant in describing material properties behaviour. The results and findings of the current study further enhances the understanding of Neo-Hookean model and hyperelastic materials behaviour. The ultimate future aim of this study is to come up with an alternative constitutive equation that may describe skin behaviour accurately. This study is novel as no similar parametric study on Neo-Hookean model has been reported before

Comparison of Convective Heat Transfer Coefficient and Friction Factor of TiO2 Nanofluid flow in a tube with Twisted Tape Inserts

Nanofluids have gained extensive attention due to their role in improving the efficiency of thermal systems. The present study reports a further enhancement in heat transfer coefficients in combination with structural modifications of flow systems namely, the addition of tape inserts. Experiments are undertaken to determine heat transfer coefficients and friction factor of TiO2/water nanofluid up to 3.0% volume concentration at an average temperature of 30 C. The investigations are undertaken in the Reynolds number range of 8000-30,000 for flow in tubes and with tapes of different twist ratios. A significant enhancement of 23.2% in the heat transfer coefficients is observed at 1.0% concentration for flow in a tube. With the use of twisted tapes, the heat transfer coefficient increased with decrease in twist ratio for water and nanofluid. The heat transfer coefficient and friction factor are respectively 81.1% and 1.5 times greater at Re ¼ 23,558 with 1.0% concentration and twist ratio of 5, compared to values with flow of water in a tube. An increase in the nanofluid concentration to 3.0% decreased heat transfer coefficients to values lower than water for flow in a tube and with tape inserts. A thermal system with tape insert of twist ratio 15 and 1.0% TiO2 concentration gives maximum advantage ratio, if pressure drop is considered along with enhancement in heat transfer coefficient

The effect of laser repetition rate on the LASiS synthesis of biocompatible silver nanoparticles in aqueous starch solution.

Laser ablation-based nanoparticle synthesis in solution is rapidly becoming popular, particularly for potential biomedical and life science applications. This method promises one pot synthesis and concomitant bio-functionalization, is devoid of toxic chemicals, does not require complicated apparatus, can be combined with natural stabilizers, is directly biocompatible, and has high particle size uniformity. Size control and reduction is generally determined by the laser settings; that the size and size distribution scales with laser fluence is well described. Conversely, the effect of the laser repetition rate on the final nanoparticle product in laser ablation is less well-documented, especially in the presence of stabilizers. Here, the influence of the laser repetition rate during laser ablation synthesis of silver nanoparticles in the presence of starch as a stabilizer was investigated. The increment of the repetition rate does not negatively influence the ablation efficiency, but rather shows increased productivity, causes a red-shift in the plasmon resonance peak of the silver-starch nanoparticles, an increase in mean particle size and size distribution, and a distinct lack of agglomerate formation. Optimal results were achieved at 10 Hz repetition rate, with a mean particle size of ~10 nm and a bandwidth of ~6 nm 'full width at half maximum' (FWHM). Stability measurements showed no significant changes in mean particle size or agglomeration or even flocculation. However, zeta potential measurements showed that optimal double layer charge is achieved at 30 Hz. Consequently, Ag-NP synthesis via the laser ablation synthesis in solution (LASiS) method in starch solution seems to be a trade-off between small size and narrow size distributions and inherent and long-term stability