Indentation of billets in continuous extrusion

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Antennas and Propagation of Implanted RFIDs for Pervasive Healthcare Applications

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Pengembangan Lembar Kerja Siswa Berstruktur Metode Penemuan Terbimbing untuk Meningkatkan Kemampuan Komunikasi Matematis Siswa

: This study aims to produce LKS structured method of guided discovery material and area of ​​a circle whose circumference is valid, practical, and effective. The method used in this research is the research and development (research and development) which adapts the model of development of Borg and Gall. The research subject is class VIII SMP Negeri 2 Sebangki of 20 people limited trial and 56 trials spacious. The results of data analysis 1) is valid based on ratings validator with an average score of 90%, as the average score of the validation of more than 80%, the LKS is categorized as very valid, meaning LKS could be tested, 2) practical based on the responses of students with an average score of 88% and enforceability of Lesson Plan with an average score of 98% in both catagories is very good, that is practical worksheets used in the learning process, 3) the effectiveness seen from the mathematical ability of written and oral communication students. Result written communications skills mathematical average of 76% and the average verbal score of students by 78%, as written and oral communication skills are both good students category, then LKS meets aspects of effective, meaning that students can express ideas or idea in the form of pictures, making working steps, and solving mathematical problems in writing, or orally

RESIDUAL EFFECTS OF ORGANIC AND MINERAL FERTILIZER APPLICATION ON CARBON SEQUESTRATION AND AGGREGATE STABILITY IN SAVANNA SOIL

Residual effects of organic and mineral fertilizer application on carbon sequestration and aggregate stability in asavanna soil were investigated, with aim of establishing the relationship between aggregate stability and carbonsequestration as related to management practices. The study was carried out in the DNPK trial farm at Samaru,Northern Guinea Savanna of Nigeria, with four main treatments; cow dung (D), nitrogen (N), phosphorus (P) andpotassium (K) at 3 levels and 81 treatment combinations arranged into nine plots of 220m3 each, with a discard of0.91m. Surface soil samples were collected from seven plots. The disturbed samples were air-dried, sieved andanalyzed for particle and aggregate size distributions, total and non-hydrolysable organic carbon and totalnitrogen. Soil carbon sequestration rate, clay dispersible index (CDI), and mean weight diameter (MWD) werealso calculated. Data obtained were transformed to account for spatial variability, thereafter subjected to ANOVAusing DMRT to compare the treatment means, and simple linear regression to detect functional relationshipamong variables. The results obtained showed that management practices have significant effects on soil carbon,dry and wet aggregates, MWD and particle size distribution with a high concentration of OC in large macroaggregate fraction (>2mm). Dry and wet MWD strongly correlated with organic carbon concentration (R2 =0.939 and 0.797 respectively, P<0.05), showing that OC is central to the formation, stabilization and maintenanceof soil aggregates in DNPK trial farm. SCSR showed no significant changes with management practicesindicating that all management practice have the same rate of carbon sequestration

Hyperosmotic priming of arabidopsis seedlings establishes a long-term somatic memory accompanied by specific changes of the epigenome

<p>Background: In arid and semi-arid environments, drought and soil salinity usually occur at the beginning and end of a plant's life cycle, offering a natural opportunity for the priming of young plants to enhance stress tolerance in mature plants. Chromatin marks, such as histone modifications, provide a potential molecular mechanism for priming plants to environmental stresses, but whether transient exposure of seedlings to hyperosmotic stress leads to chromatin changes that are maintained throughout vegetative growth remains unclear.</p> <p>Results: We have established an effective protocol for hyperosmotic priming in the model plant Arabidopsis, which includes a transient mild salt treatment of seedlings followed by an extensive period of growth in control conditions. Primed plants are identical to non-primed plants in growth and development, yet they display reduced salt uptake and enhanced drought tolerance after a second stress exposure. ChIP-seq analysis of four histone modifications revealed that the priming treatment altered the epigenomic landscape; the changes were small but they were specific for the treated tissue, varied in number and direction depending on the modification, and preferentially targeted transcription factors. Notably, priming leads to shortening and fractionation of H3K27me3 islands. This effect fades over time, but is still apparent after a ten day growth period in control conditions. Several genes with priming-induced differences in H3K27me3 showed altered transcriptional responsiveness to the second stress treatment.</p> <p>Conclusion: Experience of transient hyperosmotic stress by young plants is stored in a long-term somatic memory comprising differences of chromatin status, transcriptional responsiveness and whole plant physiology.</p&gt

BENTUK DAN PROPORSI PADA PERWUJUDAN ARSITEKTUR VERNAKULAR BUGIS (Studi Kasus : Bola Soba Di Kota Watampone,Sulawesi Selatan)

Penelitian Ini Mengangkat Arsitektur Vernakular Bugis dengan studi kasus Bola Soba Kota Watampone Sebagai wujud karya kalangan Bangsawan (Raja).Persoalan proses perancangan bangunan Bola Soba menjadi fokus telaah melalui ke-proporsi-an komponen-komponen pembentuknya.Dasar telaahnya, selain pemahaman tentang esensi ke-vernakular-an, perlu pemahaman pula sisi ke-tektonika-annya, tradisi (membangun) Arsitektur Bugis dan kaidah proporsi.Rasa estetika dalam arsitektur didasarkan pada elemen –elemen dan prinsip-prinsip perancangan yang bisa dijelaskan secara rasional salah satunya adalah prinsip proporsi. Pendekatan studinya bersandar pada : ke-ciri-an vernakular (Bugis), potret visual dan numerik (pengukuran dimensi) obyek. Potret visual dan numerik merupakan database rujukan untuk me-rekonstruksi-kan gugus obyek ke data grafis dan angka. Analisis perhitungan rasio ke-proporsi-annya dibantu perangkat lunak Microsoft Excel dan SPSS (Statistical Product and Service Solution). Temuan penelitian ini berupa besaran rasio dasar yang digunakan sebagai acuan perbandingan bagian-bagian detail bangunan dalam bangunan Bola Soba di Kota Watampone.Proporsi 1:1,23 dengan elemen Sulapa Appa menjadi temuan akhir dan diyakini sebagai dasar ukuran perhitungan proporsi dalam bangunan Bola Soba.Implikasi temuannya bisa menjadi referensi awal (hipotesis), bahwa perwujudan karya arsitektur vernakular Bugis memiliki dasar ukuran dalam proses perancangannya.Referensi ini tentunya masih perlu didalami dengan penelitian lanjutan, termasuk karya vernakular lain yang dikreasi oleh kalangan Bangsawan/Raja Bugis.Secara historis,kerajaan Bugis pernah menjadi kerajaan yang tangguh di zamannya memiliki peradaban tersendiri berupa peninggalan Arsitektur Bangunan.Ada empat kerajaan besar yang menjadi wil