Analisa Daya Dukung Pondasi Dangkal pada Tanah Lempung Menggunakan Perkuatan Anyaman Bambu dan Grid Bambu dengan Bantuan Program Plaxis

Berbagai metode perbaikan tanah dewasa ini telah banyak dikembangkan, salah satunya dengan perkuatan tanah sebagai alternative pemecahan masalah terhadap penurunan dan daya dukung tanah yang rendah, namun banyak yang menggunkan bahan dari geosintetik yang dari segi biaya tentu lebih tinggi. Salah satu alternatif yang diberikan pada pemodelan ini yaitu grid bambu dan anyaman bambu sebagai pengganti geosintetik untuk bahan perkuatan pondasi dangkal pada tanah lempung. Tujuan dari pemodelan ini untuk mengetahui nilai daya dukung tanah dan BCR dengan perkuatan grid bambu dan anyaman bambu. Pemodelan pondasi dangkal dilakukan dengan menggunakan bantuan program Plaxis versi 8.2. Parameter yang diteliti adalah pengaruh variasi jarak dan jumlah lapis perkuatan dengan menggunakan lebar perkuatan yang sama terhadap nilai daya dukung tanah dengan melihat dari grafik hubungan penurunan dan beban hasil output program Plaxis. Dari hasil penelitian didapatkan bahwa penambahan jumlah 3 lapis perkuatan pada variasi jarak perkuatan dari dasar pondasi 0,25 B memberikan daya dukung tanah tertinggi yaitu sebesar 409,537 kPa. Dari pemodelan ini dapat diketahui bahwa semakin dekat jarak perkuatan dari dasar pondasi maka daya dukung tanah juga akan semakin besar

Studi Analisis Potensi Penghematan Konsumsi Energi melalui Audit dan Konservasi Energi Listrik di Rumah Sakit Universitas Riau

The cost of electrical bill in most of hospital in this big cities indicates getting high. This phenomenal can be anticipated through auditing. By doing this audit will be able to determine the cost factor and the related issue. This paper purposes audit energy to a hospital to evaluate the potential energy saving to reduce wastes of energy for unnecessary things. In this analysis will be obtained the hospital operational cost in the efficient way. The raw data is findout by observation and direct measurement in the respective hospital. The measurement of power quality in the electricity panel main by using the instrumention of power quality analyzer (PQA). The output of this instrumen has managed to figure out the following parameters i.e. output of voltage (V) , the current (ampere) , power factor (cosphi) , active power (W) , power reactive (VAR) and power imaginery (VA). Base on the measuremant result, the power quality status the hospital is obtained. In the overall, the following results are describing i.e. energy consumtion intensity (ECI) is 6,1 kWh/m2/month for non ac room and considered as inefficient criteria and 12,89 kWh/m2/month for ac room considered as efficient criteria .The measurement also to include the lighting component to get the intensity of light to compare the condition a standard value. For lighting in health the department of health, the Republic of Indonesia .This is to be increased consideration lighting done in order to meet standards , with the type of Fluorescent Lamp with light LED(Light Emitting Diode

Hierarchy of piecewise non-linear maps with non-ergodicity behavior

We study the dynamics of hierarchy of piecewise maps generated by one-parameter families of trigonometric chaotic maps and one-parameter families of elliptic chaotic maps of $\mathbf{cn}$ and $\mathbf{sn}$ types, in detail. We calculate the Lyapunov exponent and Kolmogorov-Sinai entropy of the these maps with respect to control parameter. Non-ergodicity of these piecewise maps is proven analytically and investigated numerically . The invariant measure of these maps which are not equal to one or zero, appears to be characteristic of non-ergodicity behavior. A quantity of interest is the Kolmogorov-Sinai entropy, where for these maps are smaller than the sum of positive Lyapunov exponents and it confirms the non-ergodicity of the maps.Comment: 18 pages, 8 figure

Late Pleistocene climate of the northern Iberian Peninsula: New insights from palaeoglaciers at Fuentes Carrionas (Cantabrian Mountains)

Producción CientíficaNew Be dates for glacial landforms in the Fuentes Carrionas area (Cantabrian Mountains, nothern Spain) are presented. Mapped and dated landforms in Fuentes Carrionas made possible a palaeoglacier reconstruction for four glacial stages. Results were compared to other nearby palaeoenvironmental proxies, so a final approximation on the mean annual temperature and annual precipitation that caused the four glacial advance stages is proposed. Glaciers reached their maximum extension at 36 ka, in a cold and dry environment. A second advance stage took place between 18.5 and 19.5 ka, during the Last Glacial Maximum (LGM), when glaciers advanced in a wet environment, with positive rainfall anomalies. A third glacial advance was dated during the Oldest Dryas, in which climate shifted to extremely cold and dry conditions. Finally, a last stage has been identified and proposed to the Younger Dryas, in which precipitation anomalies are negligible. Our results confirm some of the previously made palaeoglacial and palaeoenvironmental inferences for the Iberian Peninsula, as well as provide Q4 valuable and accurate anomalies, which are useful for climate modelling.Ministerio de Economía, Industria y Competitividad (project CGL2015-68144-R

The imperative usage of an innovated Biscuit-Shaped Tenon Groove Machine towards Technology Model for interior design technology program in technical education

This study was conducted in order to create and effectively use an Innovated Biscuit-Shaped Tenon Groove Machine towards Technology Model for Interior Design technology program in Technical education so that the creative learners could use it to support instruction in school, the study was conducted at Cebu Technological University- Pinamungajan Campus, Pinamungajan, Cebu. The output of this study was regarded as an alternative technology tool of CTU- Pinamungajan Campus, Pinamungajan, Cebu where the study is being done. This study used quasi-experimental techniques, specifically survey research. 90 students and 5 professors/instructors were given questionnaires to complete for evaluation. Weighted mean and t-test were used to analyze the collected data. Based on the results and following a careful analysis, it is concluded that Innovative Biscuit-Shaped Tenon Groove Machine meets campus needs and standards

River Restoration in Spain: Theoretical and Practical Approach in the Context of the European Water Framework Directive.

River restoration is becoming a priority in many countries because of increasing the awareness of environmental degradation. In Europe, the EU Water Framework Directive (WFD) has significantly reinforced river restoration, encouraging the improvement of ecological status for water bodies. To fulfill the WFD requirements, the Spanish Ministry of the Environment developed in 2006 a National Strategy for River Restoration whose design and implementation are described in this paper. At the same time many restoration projects have been conducted, and sixty of them have been evaluated in terms of stated objectives and pressures and implemented restoration measures. Riparian vegetation enhancement, weir removal and fish passes were the most frequently implemented restoration measures, although the greatest pressures came from hydrologic alteration caused by flow regulation for irrigation purposes. Water deficits in quantity and quality associated with uncontrolled water demands seriously affect Mediterranean rivers and represent the main constraint to achieving good ecological status of Spanish rivers, most of them intensively regulated. Proper environmental allocation of in-stream flows would need deep restrictions in agricultural water use which seem to be of very difficult social acceptance. This situation highlights the need to integrate land-use and rural development policies with water resources and river management, and identifies additional difficulties in achieving the WFD objectives and good ecological status of rivers in Mediterranean countries

Prenatal Exposure to Residential Air Pollution and Infant Mental Development: Modulation by Antioxidants and Detoxification Factors

Background: Air pollution effects on children’s neurodevelopment have recently been suggested to occur most likely through the oxidative stress pathway

Fluctuating fire regimes and their historical effects on genetic variation in an endangered shrubland specialist

The Pleistocene was characterized by worldwide shifts in community compositions. Some of these shifts were a result of changes in fire regimes, which influenced the distribution of species belonging to fire-dependent communities. We studied an endangered juniper–oak shrubland specialist, the black-capped vireo (Vireo atricapilla). This species was locally extirpated in parts of Texas and Oklahoma by the end of the 1980s as a result of habitat change and loss, predation, brood parasitism, and anthropogenic fire suppression. We sequenced multiple nuclear loci and used coalescence methods to obtain a deeper understanding of historical population trends than that typically available from microsatellites or mtDNA. We compared our estimated population history, a long-term history of the fire regime and ecological niche models representing the mid-Holocene, last glacial maximum, and last interglacial. Our Bayesian skyline plots showed a pattern of historical population fluctuation that was consistent with changing fire regimes. Genetic data suggest that the species is genetically unstructured, and that the current population should be orders of magnitude larger than it is at present. We suggest that fire suppression and habitat loss are primary factors contributing to the recent decline of the BCVI, although the role of climate change since the last glacial maximum is unclear at present

Consequences of marine barriers for genetic diversity of the coral-specialist yellowbar angelfish from the Northwestern Indian Ocean

© 2019 The Authors. Ecology and Evolution published by John Wiley & Sons Ltd. Ocean circulation, geological history, geographic distance, and seascape heterogeneity play an important role in phylogeography of coral-dependent fishes. Here, we investigate potential genetic population structure within the yellowbar angelfish (Pomacanthus maculosus) across the Northwestern Indian Ocean (NIO). We then discuss our results with respect to the above abiotic features in order to understand the contemporary distribution of genetic diversity of the species. To do so, restriction site-associated DNA sequencing (RAD-seq) was utilized to carry out population genetic analyses on P. maculosus sampled throughout the species’ distributional range. First, genetic data were correlated to geographic and environmental distances, and tested for isolation-by-distance and isolation-by-environment, respectively, by applying the Mantel test. Secondly, we used distance-based and model-based methods for clustering genetic data. Our results suggest the presence of two putative barriers to dispersal; one off the southern coast of the Arabian Peninsula and the other off northern Somalia, which together create three genetic subdivisions of P. maculosus within the NIO. Around the Arabian Peninsula, one genetic cluster was associated with the Red Sea and the adjacent Gulf of Aden in the west, and another cluster was associated with the Arabian Gulf and the Sea of Oman in the east. Individuals sampled in Kenya represented a third genetic cluster. The geographic locations of genetic discontinuities observed between genetic subdivisions coincide with the presence of substantial upwelling systems, as well as habitat discontinuity. Our findings shed light on the origin and maintenance of genetic patterns in a common coral reef fish inhabiting the NIO, and reinforce the hypothesis that the evolution of marine fish species in this region has likely been shaped by multiple vicariance events