Hubungan Kuat Tarik Belah dengan Kuat Tekan Beton Ringan dengan Crumb Rubber dan Pecahan Genteng

Tujuan dari penelitian ini adalah untuk mengetahui dan menyelidiki hubungan kuat tarik belah dengan kuat tekan beton ringan dengan crumb rubber dan pecahan genteng. Pecahan genteng digunakan sebagai pengganti agregat kasar sebagian atau seluruhnya dengan variasi kadar 25%, 50%, dan 75%. Untuk agregat kasar digunakan batu pecah dan batu tidak pecah. Sedangkan crumb rubber digunakan sebagai pengganti pasir secara keseluruhan. Faktor air semen ditetapkan pada nilai 0,28. Benda uji yang dibuat adalah benda uji silinder berukuran diameter 150mm dan tinggi 300mm. Sampel benda uji dibuat sebanyak 36 buah. Perawatan benda uji dilakukan dengan merendam beton selama 28 hari. Pengujian kuat tarik belah dan kuat tekan dilakukan ketika umur benda uji mencapai 28 hari. Hasil dari penelitian menunjukkan bahwa beton ringan dapat dibuat dengan menggunakan crumb rubber dan pecahan genteng pada faktor air semen 0,28. Hasil nilai rata-rata pengujian kuat tekan beton campuran crumb rubber dan pecahan gentengan variasi batu pecah 75 % dan genteng 25% adalah 18,533 MPa. Berat isi beton crumb rubber adalah 1750 kg/m3 -1850 kg/m3 . Hasil pengujian ini menunjukan bahwa kuat tekan beton masuk kriteria kuat tekan beton ringan struktural yakni 17,24 MPa. Sedangkan hasil nilai rata-rata pengujian kuat tarik belah beton crumb rubber variasi batu pecah 75 % dan genteng 25% adalah 2 MPa. Hasil pengujian ini menunjukan bahwa kuat tarik belah beton masuk kriteria kuat tarik belah beton ringan struktural yakni 2 MPa. Penggunaan crumb rubber memberi pengaruh pada penurunan berat jenis, penurunan kuat tekan dan kuat tarik belah. Penggunaan crumb rubber pada campuran beton sangat berguna untuk mengurangi limbah karet yang tidak terpakai dan melestarikan batuan alam karena mengurangi kebutuhan untuk menambang agregat alami

High Plasma Tnf-? Levels And Mononuclear Cells Inos And Tnf-? Expression AS Risk Factors For Painful Diabetic Neuropathy

Painful Diabetic Neuropathy (PDN) is one of the most common and annoyingcomplications of diabetes mellitus. The pathogenesis of PDN is complex and still unclear.Recently it has become clear that nitric oxide (NO) and proinflammatory cytokines playan important role in the pathogenesis and maintenance of pain in PDN. Based on thisphenomenon, this study was conducted to investigate whether the cytokine tumornecrosis factor-alpha (TNF-?) and NO, in this case inducible Nitric Oxide Synthase(iNOS), play a role in PDN pathogenesis.The study was carried in two steps. The first step was a cross sectional and thesecond step was a case-control study. The study was performed in 110 type-2 diabeticpatients. The plasma TNF-? levels were determined by ELISA while the expression ofTNF-? and iNOS in mononuclear cells were analyzed immunohistochemically.Of 110 subjects, 59 patients suffered from Painful DN (case) and the remaining51 patients were Painless DN (control). Cross sectionally, plasma TNF-? levels andimmunoreactivity for iNOS and TNF-? were higher in patients with more severe pain inthe Visual Analog Scale (VAS). There were statistically significant differences (p <0.05) between mild and severe pain in regard to TNF-? level (15.24 pg/ml ± 5.42 vs.20.44 pg/ml ± 10.34 ); to iNOS immunoreactivity (9.72 % ± 8.61 vs. 15.6% ± 11.84); andto TNF-? immunoreactivity (13.0 % ± 9. 48 vs. 20.44% ± 11.75).The case control study showed that TNF-? had an odd ratio of 5.053 [CI 95%(2.241-11.392); p < 0.001]. TNF-? immunoreactivity of 4.125 [CI 95% (1.805-9.425); p< 0.001]; and iNOS immunoreactivity of 3.546 [CI 95% (1.613-7.795); p = 0.002]. There were correlations between TNF-? level, TNF-? and iNOS immunoreactivity andVAS with coefficient correlation: 0.330; 0.285 and 0.275 (p < 0.05) respectively.It is concluded that Diabetic Neuropathy patients with high TNF-? levels, iNOSand TNF-? immunoreactivity of mononuclear cells have higher risk for painful DN thanpainless DN. The higher TNF-? level, iNOS and TNF-? immunoreactivity the moresevere was the pain. This supports the hypothesis that TNF-? and iNOS have role inPDN pathogenesis. The results of this research could be applied as a basic for furtherresearch in pursuit of better management of PDN

Analisa Pengaruh Kualitas Produk Dan Kualitas Layanan Terhadap Kepuasan Pelanggan Dan Loyalitas Pelanggan Di Pisa Kafe Surabaya

: The growth of food and beverages industry in Surabaya is increasing. Therefore, restaurants must have loyal customers in order to maintain their business. This research is written to find the impact of product and service quality towards customer\u27s satisfaction and loyalty. Researcher wanted to explore loyalty factors of Pisa Kafe Surabaya\u27s loyal customers. This research used PLS-SEM (Partial Least Square-Structural Equation Modeling) technique to analyze, also service quality use second order formative model. The result has proved that product quality significantly and positively impacts customer\u27s satisfaction and service quality, which includes tangibles, reliability, responsiveness, assurance and empathy significantly and positively impacts customer\u27s satisfaction and it creates customer\u27s loyalty in Pisa Kafe Surabaya

A NEW SPECIES OF ANADENDRUM (ARACEAE) FROM MALESIA

A new species of Anadendrum ellipticum Widyartini & Widjaja, collected from Malay Peninsula, Kalimantan, North Sulawesi and Java proposed. This species is closely related with A. microstachyum but it differs on the structure of leaves, perianth and filament

Hubungan Antara Asertivitas Dan Kematangan Dengan Kecenderungan Neurotik Pada Remaja

The purpose of this study was to examine the correlations between neuroticness, assertivity, and maturity. It was hypotesized that there were relationships between neuroticness, assertivity and maturity; and there was a negative correlation between neuroticness and assertivity, also there was a negative correlation between neuroticness and maturity. The subjects were 95 male and female students of SMK 7 in Yogyakarta, 15 – 18 years old. Three questionaires were applied to measure neuroticness, assertivity, and maturity. Multiple regression analysis was used as a statisticalmethod. Results of the study showed that there was relationship between neuroticness, assertivity, and maturity (F = 6,88; Ry(1-2) = 0,36; p<0,01); and there were positive correlation between neuroticness and asertivity rx1y = 2,12 (p<0,05), there were positive correlation between neuroticness and maturityrx2y = 0,28 (p<0,05). These two minor hypotheses were failed

Analisis Beban Kerja (Workload) Dan Kinerja Karyawan Housekeeping Di Hotel X, Surabaya

: This study discusses about the influence of employee workload on the performance of the Housekeeping employee. The methods used in this study are Work Sampling and NASA-TLX. For analyzing technique, this research is using a simple linear regression to know if there is a relationship between workload and performance The independent variable in this study is workload and the dependent variable is performance. From this research, it is revealed that the employee workload has a negative and significant relationship on the Housekeeping employee performance. This study also showed how many employees should be allocated to complete the work within a specified period of time using the workload calculating formula of the Minister of Administrative Reform of Indonesia