Judul: Efektivitas Ekstrak Etanol Akar Purwoceng (Pimpinella Alpina Kds) Pada Induk Tikus Selama 1-13 Hari Kebuntingan Terhadap Siklus Estrus Anak Betinanya
Abstrak: Pemberian ekstrak etanol akar purwoceng (Pimpinella alpina KDS) selama 1-13 hari kebuntingan tikus bertujuan untuk melihat kinerja reproduksi anak betinanya. Delapan ekor tikus bunting yang memiliki 5-7 anak yang digunakan pada penelitian ini dibagi menjadi dua kelompok; kelompok betina bunting sebagai kontrol dan kelompok betina bunting yang diberikan ekstrak etanol akar purwoceng dengan dosis 25 mg/300 gram BB. Setelah pemberian ekstrak etanol akar purwoceng, tikus bunting dipelihara sampai melahirkan. Anak-anak tikus betina yang dilahirkan diamati pembukaan vagina dan siklus estrusnya. Hasil penelitian menunjukkan bahwa purwoceng dapat mempercepat pembukaan vagina dibandingkan kelompok kontrol, tetapi purwoceng tidak memberikan efek pada panjang siklus estrus.
Keyword: pembukaan vagina, purwoceng, siklus estrus

Judul: Siklus Reproduksi Anak Tikus Dari Induk Yang Diberi Ekstrak Etanol Akar Purwoceng Selama 13–21 Hari Kebuntingan.
Abstrak: Purwoceng (Pimpinella alpina) is one of Indonesian medicinal herbals that was originating from high altitudes area such as Dieng at Central Java. Its root has an efficacious as aphrodisiac because of its compound such as isoflavon group. The aim of this study was to test the efficacy of phytoestrogens contained in purwoceng (Pimpinella alpina) on the descended testes, vaginal opening and estrous cycle. This study used two groups of pregnant rats. The first group consist of four pregnant rats which were given purwoceng root ethanol extract with dose of 25 mg / ml per 300 g BW orally at 13–21 gestation. The second group of rats were given water at the 13th day of gestation to 21 as a control. All pregnant rats were selected rats which has delivered 8–9 pups. The results showed that time of descended testes and vaginal opening of purwoceng group was earlier than control, descended testes of purwoceng group was on day 29 and vaginal opening was on day 36. Descended testes of control group was on day 34 and vaginal opening was on day 38. Length of estrous cycle in purwoceng group were longer than control with proestrus and estrus phase were also longer than control.
Keyword: Estrous cycle, ethanol extracted, purwoceng roots, Rattus norvegicus, vaginal opening

Judul: Characterizations of low alloy steel sae 4422  plated with chromic acid (Cro3)
Abstrak: Characterizations of low alloy steel SAE 4422 plated with chromic acid (CrOrO3) was use Optical Microscopy (OM), Scanning Electron Microscopy (SEM), X-Ray Diffraction (XRD), RD),Energy Dispersive Analysis of X-Ray (EDAX), Hardness Test and Roughness Test. Microstructures analysis exhibits cracks and grain boundaries microcracks as a characteristics of chrome metal found at plating metal. Perlite and Ferrite as grains of steel found at base metal with grain boundaries around it. Phase analysis of plating metal appropriate to chrome metal with lattice constant (a) is 2.559 Å and phase analysis of base metal appropriate to iron ferrite with lattice constant (a) is 3.318 Å. Both plating and base metal have cubic system. Chemical analysis of plating metal at surface section exhibits that cracks area have highest value of carbon element compare with grains and grains boundaries area. While chemical analysis of base metal at cross section exhibits that perlite have highest value of carbon element compare with ferrite and grain boundaries. The hardness value of plating metal at surface section and cross section are 753 and 637 VHN. While, the hardness value of base metal and interface area at cross section are 205 and 373 VHN. The roughness value at measurement points of chrome surface for as received sample are 0.445 μm. Observation used Optical Microscopy and Scanning Electron Microscopy exhibits surface irregularities combine to form surface texture of plating metal at surface section.
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