INVENTARISASI TUMBUHAN OBAT DAN PEMANFAATANNYA SECARA TRADISIONAL OLEH MASYARAKAT DI DESA AMESIU KABUPATEN KONAWE, SULAWESI TENGGARA

ABSTRACT Amesiu village is one of the areas that has a considerable potency of medicinal plants. This study aims to inventory the types of plants used as medicine and to study the utilization of medicinal plants in the village of Pondidaha Pondidaha District Konawe. This study uses qualitative deskrpative method with data collection techniques through interviews, observations, and documentation. The data of the research results are analyzed descriptively and presented in the form of descriptions, tables and images. The results showed that in Amesiu Village there are 39 species of 27 plant families used by the community as traditional medicine materials. Organs or parts of plants that are utilized as the manufacture of medicinal herbs, namely roots, rhizomes, tubers, stems, bark, leaves, fruits and seeds. The most widely used part of plants as medicine is leaves. The processing process is done by boiling, shredded, pounded and burned. The most widely used way of processing is boiled. Types of diseases that can be treated with medicinal plants as many as 31 types of diseases.  Keywords : Inventory, Medicinal Plants, Amesiu Village ABSTRAKDesa Amesiu merupakan salah satu wilayah yang memiliki potensi tumbuhan obat yang cukup banyak. Penelitian ini bertujuan untuk menginventarisasi jenis-jenis tumbuhan yang dimanfaatkan sebagai obat  dan untuk mengkaji pemanfaatan tumbuhan obat di Desa Amesiu Kecamatan Pondidaha Kabupaten Konawe. Penelitian ini menggunakan metode deskrptif kualitatif dengan teknik pengumpulan data melalui wawancara, observasi, dan dokumentasi. Data hasil penelitian dianalisis secara deskriptif dan disajikan dalam bentuk deskripsi, tabel dan  gambar. Hasil penelitian menunjukkan bahwa di Desa Amesiu terdapat 39 spesies dari 27 famili tumbuhan yang dimanfaatkan oleh masyarakat sebagai bahan pengobatan tradisional. Organ atau bagian tumbuhan yang dimanfaaatkan sebagai pembuatan ramuan obat yaitu akar, rimpang, umbi, batang, kulit batang, daun, buah dan biji. Bagian tumbuhan yang paling banyak digunakan sebagai obat yaitu daun. Proses pengolahan dilakukan dengan cara direbus, diparut, ditumbuk dan dibakar. Cara pengolahan yang paling banyak digunakan adalah direbus. Jenis penyakit yang dapat diobati dengan tumbuhan obat sebanyak 31 jenis penyakit.  Kata kunci : Inventarisasi, Tumbuhan Obat, Desa Amesi

Types of the Fiber Glass-Mat on Fatigue Characteristic of Composite Materials at Constant Fiber Volume Fraction: Experimental Determination

The aim of this work is to study the influence of the type of fiber glass mat on fatigue behavior of composite material which is manufactured from polyester and E-glass (woven roving, chopped strand mat (CSM)) as a laminate with a constant fiber volume fraction (VF) of 33%. The results showed that the laminates reinforced with E-glass (woven roving) [0/90, ±45.0/90] and [0/90, CSM, 0/90] have lower fatigue strength than the laminates reinforced with E-glass [0/90]3,[CSM]3 and [CSM, 0/90, CSM] although they had different tensile strength; the best laminate was [0/90]3

Effect of Corrosion Time on Critical Buckling Load of AISI 304 Columns

In this work Corrosion buckling interaction behavior of AISI 304 stainless steel circular columns was investigated. Long and intermediate columns diameter of (6 mm) are tested in as received and corroded condition. Corroded columns are tested after embedded it in soil for different times. Rotating buckling machine test was used to evaluate the critical buckling load (pcr) under dynamic compression loads. By using Perry Robertson formula, experimental work results are compared. The results showed that increasing in corrosion time (embedding time), the reduction in critical buckling load increases also. Maximum reduction of buckling load value are (2.28%, 1.37%) for long and intermediate column respectively as compared with as received condition

Mechanical Properties of Al 6061/Al2O3 Nanocomposite by Stir Casting

Present work deals with the examination of the mechanical properties of Al 6061 composites, which were successfully fabricated by stir casting technique and then reinforced by using different percentages of Al2O3 nanoparticles up to 10 wt%. The required samples were carefully prepared. Evaluation of the mechanical properties such as hardness, yield tensile stress and ultimate tensile stress were effectively obtained at various percentages of Al2O3 nanoparticles .It was found that the mechanical properties of 6061 /Al2O3 nanoparticles are critically influenced by the concentrations of the reinforced Al2O3 nanoparticle, since there was a substantial enhancement in the mechanical properties, as the fractions of Al2O3 nanoparticles increased. This improvement in the mechanical properties was attributed to the uniform distribution of reinforcement nanoparticles as well as the grain refinement of aluminum matrix with minimal porosity

Microstructure and Electrical Conductivity of 7075Al alloy/SiC Nano Composites

Analysis using scanning electron microscope (SEM) at high magnification showed that the microstructure of the nano composites exhibited uniform distribution of SiC particles and less porosity. The experimental results revealed that adding Nano Reinforcement to 7075Al alloy improve the electrical conductivity for the metal matrix composites with 3, 6, 9 wt. % SiC were adopted in this work. The maximum enhancements were observed at 9wt. %SiC of 5200(Ω. m) -1 compared with the metal base of 35 (Ω. m) -1

Characterization of AA 6061–Alloy Composites Reinforced by Al2O3 Nano Particles Obtained by Stir Casting

The aim of this work is generated a Nano materials having good mechanical properties for 6061AA-alloy.Fivewt% of Nano particles (Al2O3) (20-30nm grain size) were adoptees (1, 1.5, 2, 2.5 and 3wt% AL2O3).The Nano composites were manufactured by stir casting technique. The mechanical properties of Nano composites were obtained at room temperature and was found that the matrix hardness is improved by 35.36%, matrix ultimate by107%, yield by36.84% and ductility by 12% at 1.5wt% AL2O3.Also it was obtained that all the mechanical properties of the Nano composites are higher than that of metal matrix. The above improvements are due to less porosity, high uniform distribution and good bounding between metal matrix and Al2O3

Investigation the Creep-Fatigue Behavior and A.C. Electrical Conductivity of AA 6061 Under Ultrasonic Peening

Ultrasonic peening is an innovative surface improvement process used to increase the resistance of aircraft metals and enhance high cycle fatigue life. The process creates residual compressive stresses deep into part surfaces. These compressive surface stresses inhibit the initiation and propagation of fatigue cracks. Aluminum alloys are relatively new materials used in aerospace, marine, automobile, and bridges due to low weight, which has significant advantages compared to the other materials. A major concern in the design of Aluminum alloys subjected to variable loads is fatigue strength and life. In this paper mechanical properties, fatigue strength, fatigue life and A.C.. electrical conductivity were studied for AA6061-T6 to assess the effects of ultrasonic peening (UP) on mechanical properties, fatigue at room temperature (RT), creep-fatigue (CF) at 250 ͦC and A.C.. electrical conductivity. Test results showed that after UP, the mechanical properties; ultimate tensile strength (UTS) and yield stress (Ys) were noticeably improved. The improvements in UTS and Ys were enhanced by 5.7% and 1.5% respectively while the ductility was reduced from 16.5% to 15.7%. Fatigue strength was enhanced by 8.37% compared to strength at RT. The results of UT before creep-fatigue CF showed increasing in fatigue strength 147 MPa at CF 250 ̊C and improved to153 MPa after applying UP, indicating 4% improvement in strength. The fatigue life was improved after UP for both RT and CF. It was found that the A.C. electrical conductivity increase as the frequency increase for all the cases above

Electrical Laser Alarm System for Controlling the Buckling Failure of 304 Stainless Steel under Shot Peening Treatment

The purpose of this paper is to design and manufacture the electrical laser alarm system to assess the buckling failure of 304 stainless steel column and to estimate the critical buckling load (Pcr) under increasing compressive load without shot peening (WSP) and with shot peening (SP). The evaluation of the critical buckling load (Pcr ) was done experimentally and theoretically for long and intermediate pinned – fixed columns. The experimental results revaled that 25 min. shot peening time (SPT) improved the critical buckling load (Pcr ) by 13.3% - 15.39% improvement percentage (IP) for long columns while 18.51% - 23.07% for intermediates. Also it was observed that reducing the effective length (Leff ) resulting in increasing the effect of 25 min. shot peening time (SPT) and kept constant when effective length (Leff ) larger than 200mm. The difference percentage (DP) obtained from theoretically and experimentally comparison between the critical buckling load (Pcr ) was 33.33 to 41.18 for without shot peening and 23.07 to 33.34 for 25 min. shot peening time (SPT) based on Euler and Johnson theories for both long and intermediate columns. Also it was revaled that increasing the slenderness ratio (S.R) reducing the critical buckling load (Pcr) for both columns and both conditions of testing without shot peening (WSP) and shot peening (SP)

Mechanical Properties of 7075 Aluminum Alloy Matrix/Al2O3 Particles Reinforced Composites

7075 Aluminum alloy metal matrix composites