Study of Gametogenesis Bamboo Coral Isis hippuris in Bone Tambung Island, Spermonde Archipelago, Makassar, South Sulawesi

Isis hippuris is a species of coral abundant in Bone Tambung island, Spermonde islands, South Sulawesi. Isis hippuris is known as the bamboo coral, in Indonesia into the spotlight after their retrieval in large quantities while the reproduction has not researched Isis hippuris. Sampling was conducted from February to June 2014 at different stations. Based on observations of coral tissue preparations, Isis hippuris is a Gonokorik coral species that have only ovary or testis in one polyp. The results of observation showed oocytes discovered on February - June 2014. Based on the percentage of its appearance, oocytes are found at least in February, mainly oocytes Stage I. The oocyte diameters have different sizes each month. The average size of the smallest Stage I oocytes contained in May is 39.37 μm while the biggest in May is 68.33 μm. Testes formation begins while the earlier quarter and matures on the full moon or the end quarter early in March, the male gonads are found throughout months of observation, have different diameters. The average diameter of the testes is highest in April in Stage III 222.70 μm range and the lowest for the observation in May at stage I ranges from 54.77 μ

PENERAPAN MODEL PEMBELAJARAN MANDIRI DENGAN MODEL SAVI (SOMATIS, AUDITORI, VISUAL, INTELEKTUAL) PADA MATA PELAJARAN KONSTRUKSI BANGUNAN UNTUK MENINGKATKAN KUALITAS PROSES DAN HASIL BELAJAR SISWA KELAS X JURUSAN BANGUNAN DI SMKN 2 SURAKARTA TAHUN AJARAN 2015/2016

Penelitian ini bertujuan untuk: (1) mengetahui penerapan model SAVI (2) mengetahui peningkatan kualitas proses belajar (3) mengetahui peningkatan hasil belajar pada mata pelajaran Konstruksi Bangunan di kelas X TGBA SMKN 2 Surakarta. Penelitian ini merupakan penelitian tindakan kelas (PTK). Penelitian dilaksanakan dalam dua siklus, dengan tiap siklus terdiri atas perencanaan, pelaksanaan, pengamatan, dan refleksi. Teknik pengumpulan data yang digunakan adalah observasi, wawancara, dokumentasi, dan tes. Uji validitas data menggunakan teknik triangulasi data dan analisis data menggunakan analisis deskriptif. Hasil penelitian menunjukan bahwa (1) penerapan model SAVI di kelas telah dilaksanakan dengan baik (2) model SAVI dapat meningkatkan kualitas proses belajar di kelas (3) model SAVI dapat meningkatkan hasil belajar di kelas. Artinya, setelah diterapkannya model SAVI di kelas X TGBA kualitas proses dan hasil belajar siswa bisa meningkat. Siswa menjadi lebih mandiri saat proses pembelajaran. Kata Kunci: SAVI, Kualitas Proses, Hasil belaja

A Comparative Analysis of Groundwater Vulnerability and PFAS Contamination in Maine

As more information is learned regarding the long-term health effects of per- and polyfluoroalkyl substances (PFAS), increasing regulatory measures are being taken to protect the public from these chemicals. States like Maine are on the forefront of such legislation, banning land-applied biosolids in 2022 for fear of PFAS contamination, with plans to halt sales of all unnecessary PFAS products in the state by 2030. The state has conducted some testing of groundwater supplies, but the near-ubiquitous nature of PFAS in manufacturing indicates contamination may be widespread. To prioritize testing in Maine’s most vulnerable aquifers, a groundwater susceptibility map has been developed using a modified form of the EPA’s DRASTIC model. The model uses geological, atmospheric, and land use data to estimate the relative vulnerability of groundwater across the state. Additionally, a heatmap of potential PFAS sources was created, where each site was assigned a risk score based on the upper magnitude of PFAS contamination associated with its industry. These maps were compared with state PFAS test results to determine the validity of each method. Regional vulnerability trends were found which indicate karst features, coarse glacial/fluvial deposits, volcanic geology, and urban development are signs of high groundwater vulnerability. Density of potential PFAS sources was also found to be highest around urban centers, with PFAS test data affirming the relationship. Recommendations are made for best management practices guided by the models, such as protection of the most vulnerable aquifers via rezoning and building factories on impermeable geologies. Future model development is encouraged with more robust datasets and additional fine-tuning of the statewide Depth to Groundwater, Depth to Bedrock, and Hydraulic Conductivity maps

You Can’t “Nudge” Nuggets: An Investigation of Late Night Dining With Behavioral Economics Interventions

A mixed-methods approach was used to evaluate and improve the “Late-Night Dining” options in a university dining hall. Surveys assessed student desires around Late-Night offerings, and evaluated students’ habits and motivations during Late-Night. Two interventions based on the principles of behavioral economics were implemented to see if students could be “nudged” into making healthier choices. In the first, a “veggie-heavy” entrée was added at the beginning of the entrée line, so that students would substitute a healthier entrée for the less healthy alternatives. In the second, a healthy snack-food bar was set up to cater to students who didn’t want to stand in the long entrée line. Data on food choice was collected during the interventions. Survey responses showed significant differences in the reasons females and males utilized Late-Night Dining (p Following our interventions, Dining Services continued to offer the healthy snack bar, and veggie-heavy entrées were included in the rotation of Late-Night entrée options