Efektivitas Metode Pemecahan Masalah untuk Meningkatkan Hasil Belajar Siswa Kelas X Teknologi Pengolahan Hasil Pertanian (TPHP) 1 SMK Negeri 1 Limboto pada Materi Konsep Mol

Penelitian ini bertujuan untuk mengetahui besarnya keefektifan metode pemecahan masalah untuk meningkatkan hasil belajar siswa kelas X Teknologi Pengolahan Hasil Pertanian (TPHP) 1 SMK Negeri 1 Limboto pada materi konsep mol. Metode penelitian ini merupakan metode kuantitatif. Sampel penelitian adalah seluruh siswa kelas X Teknologi Pengolahan Hasil Pertanian (TPHP) 1 SMK Negeri 1 Limboto yang berjumlah 25 siswa, dengan menggunakan jenis penelitian Pre-Experimental Designs dengan rancangan penelitian yang digunakan adalah “One-Group Pretes-Posttest Design”. Pengumpulan data menggunakan tes hasil belajar dalam bentuk essai yang terdiri dari 5 butir soal dan diperoleh nilai rata seluruh siswa sebesar 82,24 dengan frekuensi 18 siswa tuntas dan 7 siswa tidak tuntas. Hasil analisis nilai gain yang dinormalisasi, <g>, menunjukkan bahwa efektivitas metode pemecahan masalah untuk meningkatkan hasil belajar siswa kelas X Teknologi Pengolahan Hasil Pertanian (TPHP) 1 SMK Negeri 1 Limboto pada materi konsep mol sebesar 0,76

A Framework for Construction Workspace Management: A Serious Game Engine Approach

Construction workspace is regarded as one of the main constraints on construction sites. Construction workspaces are generally difficult to proactively plan and manage due to the dynamic nature of a site where workspace requirements keep changing as time evolves. However, project managers are looking for ways to develop proactive site plan for the workspaces required for construction activities as this can impact not only on the cost and project duration, but can also contribute to provide a safer site. This research paper presents an approach for integrating workspace management within the planning process using a serious game engine technology. This paper first illustrates a review of the workspace management practices and advanced visualization techniques in the construction industry. Then, it presents a process framework for an interactive decision support system that integrates workspace planning into 5D planning in order to enable safer, efficient and more productive construction sites. The decision support system will identify schedule conflicts, workspace conflicts and the severity of their conflicts, and workspace congestions on a construction site and allow construction planners to resolve spatial conflicts prior to construction. Finally, the paper shows the current progress in the development of an initial prototype and outlines the future work and research. © 2012 American Society of Civil Engineers

Impact of P2RX7 ablation on the morphological, mechanical and tissue

Duchenne muscular dystrophy (DMD) is an inherited, lethal disorder characterised by progressive muscle degeneration and associated bone abnormalities. We have previously demonstrated that P2RX7 purinergic receptors contribute to the pathogenesis of DMD, and found that P2RX7 ablation alleviated the severity of the disease. In this work we have used a dystrophic mdx mouse crossed with the global P2RX7 receptor to generate a knockout mouse (mdx/P2X7−/−), and compared its morphometric, mechanical and tissue properties against those of mdx, as well as the wild type (WT) and the P2RX7 knockout (P2X7−/-). Micro-computed tomography (µCT), three-point bending testing, scanning electron microscopy (SEM) and nano-indentation were utilised in the study. The bones were analysed at approximately 4 weeks of age to examine the impact of P2RX7 ablation on the bone properties during the acute disease phase, before muscle wasting is fully developed. The results show that P2RX7 purinoceptor ablation has produced improvement or significant improvement in some of the morphological, the mechanical and the tissue properties of the dystrophic bones examined. Specifically, although the ablation produced smaller bones with significantly lower total cross-section area (Tt.Ar) and Second Moment of Area (SMA), significantly higher cortical bone area (Ct.Ar), cortical area fraction (Ct.Ar/Tt.Ar) and trabecular bone volume fraction (BV/TV) are found in the mdx/P2X7−/− mice than in any other types. Further, the mdx/P2X7−/− bones have relatively higher average flexural strength, work-to-fracture and significantly higher strain to failure compared with those of mdx, suggesting greater resistance to fracture. Indentation modulus, elasticity and creep are also significantly improved in the knockout cortical bones over those of mdx. These findings seem to suggest that specific pharmacological blockade of P2RX7 may improve dystrophic bones, with a potential for therapeutic application in the treatment of the disease

Tomographic Pn velocity and anisotropy structure beneath the Anatolian plateau (eastern Turkey) and the surrounding regions

An edited version of this paper was published by the American Geophysical Union (AGU). Copyright 2003, AGU. See also: http://www.agu.org/pubs/crossref/2003.../2003GL017391.shtml; http://atlas.geo.cornell.edu/turkey/publications/Al-Lazki-et-al_2003.htmWe use Pn phase travel time residuals to invert for mantle lid velocity and anisotropy beneath northern Arabia eastern Anatolia continent-continent collision zone. The primary phase data were obtained from the temporary 29- station broadband PASSCAL array of the Eastern Turkey Seismic Experiment. These data were supplemented by phase data from available stations of the Turkish National Seismic Network, the Syrian National Seismic Network, the Iranian Long Period Array, and other stations around the southern Caspian Sea. In addition, we used carefully selected catalog data from the International Seismological Centre and the National Earthquake Information Center bulletins. Our results show that low (<8 km/s) to very low (<7.8 km/s) Pn velocity zones underlie the Anatolian plateau, the Caucasus, and northwestern Iran. Such low velocities are used to infer the presence of partially molten to absent mantle lid beneath these regions. In contrast, we observed a high Pn velocity zone beneath northern Arabia directly south of the Bitlis-Zagros suture indicating the presence of a stable Arabian mantle lid. This sharp velocity contrast across the suture zone suggests that Arabia is not underthrusting beneath the Anatolian plateau and that the surface suture extends down to the uppermost mantle. Pn anisotropy orientations within a single plate (e.g. Anatolia plate) show a higher degree of lateral variation compared to Pn velocity. Areas of coherent Pn anisotropy orientations are observed to continue across major fault zones such as the EAF zone

Potensi Rumput Laut Gracilaria SP sebagai Bahan Alternatif Dye Sensitized Solar Cell (Dssc)

Rumput laut Gracilaria sp adalah salah satu komoditas di daerah perairan bagian selatan Porong, Sidoarjo. Telah dilakukan studi untuk mengetahui potensi rumput laut gracilaria sp sebagai materialalternatif pelapis DSSC, dengan memanfaatkan fikoeritrin atau pigmen berwarna merah yangterkandung dalam tumbuhan tersebut. Nilai penyerapan cahaya diidentifikasi sebagai parameter untukmenentukan potensial dari fikoeritrin menggunakan metode regresi. Hasil yang diperoleh menunjukkanbahwa fikoeritrin yang terkandung dalam Gracilaria sp memiliki potensial penyerapan cahaya antara489-545 nm yang nilainya mendekati panjang gelombang sinar matahari dengan rentang antara 300-800 nm. Dengan perolehan rentang tersebut disimpulkan bahwa Gracilaria sp dapat digunakan sebagai material alternatif DSSC

Assessment of drought impacts on vegetation health: a case study in Kedah

Prolonged drought in the early of 2014 has caused Malaysia to experience water supply shortage which directly affects both health and growth of vegetation. Thus this study aims to assess the risk vegetation areas that were impacted during 2014's drought by integrating the Standardized Precipitation Index (SPI) and Normalized Differentiation Vegetation Index (NDVI) methods. These two methods were able to assess the risk areas for the vegetation by measuring its health and classifying them according to its severity while considering the rainfall reduction at the specific time and location. The results obtained from this study shows that the central and north west of Kedah was vulnerable to the occurrence of drought. Kedah was more impacted by the dry event during the northeast monsoon. This study is significant as a fundamental input for further research and as an alternative approach by the application of space technology

Geological study and mining plan importance for mitigating alkali silica reaction in aggregate quarry operation

More than 80 million tonnes of construction aggregate are produced in Peninsular Malaysia. Majority of construction aggregate are produced from granite. Developing regions of Johor Bahru, Kuala Lumpur, Penang and Selangar utilize granite aggregates. Normally it is considered aggregates as non-alkali reactive. Geological study can identify various rock types, geological structures, and reactive minerals which contribute to Alkali Silica Reaction (ASR). Deformed granites formed through faulting results in reduction of quartz grain size. Microcrystalline quartz and phyllosilicates are found in granites in contact with country rocks. Secondary reactive minerals such as chalcedony and opal may be found in granite. Alkali Silica reaction is slow chemical reaction in concrete due to reactive silica minerals in aggregates, alkalis in cement and moisture. For long term durable concrete, it is essential to identify potential alkali silica reactive aggregates. Lack of identifying reactive aggregates may result spalling, cracking in concrete and ultimately ASR can result in hazard to concrete structure. This paper deals with geological study of any aggregate quarry to identify rock type and geological structures with laboratory test –petrographic analysis and bar mortar test can identify type of aggregates being produced. Mine plan with Surpac software can be developed for systematic working for aggregate quarry to meet construction aggregate demand