PENGGUNAAN MEDIA MODEL PEMBENTUKAN URIN PADA PEMBELAJARAN KONSEP EKSKRESI UNTUK MENGIDENTIFIKASI SIKAP ILMIAH SISWA SMA

Penelitian ini bertujuan untuk mengidentifikasi sikap ilmiah yang muncul melalui pembelajaran yang menggunakan media model pembentukan urin. Pembelajaran yang menggunakan media model pembentukan urin adalah pembelajaran tentang sub konsep proses pembentukan urin dan kelainan pada ginjal yang dapat direpresentasikan dengan cara mendemonstrasikan media model pembentukan urin. Untuk mengidentifikasi sikap ilmiah dilakukan observasi melalui lembar observasi dengan bantuan observer dan hasil angket yang diisi oleh siswa. Metode yang digunakan dalam penelitian ini adalah metode pre-eksperimen. Penelitian ini dilakukan di salah satu SMA Negeri di Kota Cimahi dan sampel dipilih secara acak. Hasil penelitian yang diperoleh dari lembar observasi menunjukan bahwa sikap rasa ingin tahu menjadi sikap yang paling dominan muncul dengan kategori sangat sering muncul, sikap respek terhadap data, kritis, ketekunan, bekerjasama dengan orang lain, jujur, terbuka dan ketertarikan terhadap sains muncul dengan kategori sering muncul sedangkan sikap skeptis muncul dengan kategori jarang. Pada hasil angket menunjukan sikap rasa ingin tahu menjadi sikap yang paling dominan muncul dengan kategori sangat kuat, sikap respek terhadap data, kritis, ketekunan, bekerjasama dengan orang lain, skeptis, jujur, terbuka dan ketertarikan terhadap sains muncul dengan kategori kuat. Hasil belajar yang merupakan data sekunder dalam penelitian ini juga menunjukan pencapaian yang baik. Semua siswa dapat mencapai nilai Kriteria Ketuntasan Minimal (KKM) sehingga dapat dikatakan bahwa pembelajaran dapat diikuti dengan baik oleh siswa.;--- The purpose of this research is to identifiy scientific attitude through learning using the media model of urine formation. Learning to use the media model of urine formation is learning about the process formation of urine sub concepts and abnormalities in the kidneys that can be represented using media models by demonstrate the formation of urine. To identify the scientific attitude of observation through the observation sheet with the help of an observer and the results of questionnaire completed by the students. The method used in this study is a pre-experiment. This study was conducted in one of the high schools in Cimahi and samples selected at random. The results obtained from the observation sheet shows that the attitude of curiosity are the attitude of the most dominant emerging categorized as very often arises, the attitude of respect for evidence, critical, perseverance, cooperation with others, honesty, open minded and interest in science came up with a category that often appears while the attitude skeptism arise with rare category. On the results of the questionnaire showed his curiosity be the most dominant attitude emerged with a very strong category, the attitude of respect for the data, critical, perseverance, cooperation with others, skeptism, honesty, open minded and interest in science appears with the strong category. The result of study are secondary data in this study also shows a good achievement. All students can achieve the Kriteria Ketuntasan Minimun (KKM) so it can be said that learning can be followed by the student

Amelioration of the Impact of Physical Fatigue on Cognitive Performance by Phytochemicals: The Effect of a Blackcurrant Supplement : A thesis presented in partial fulfilment of the requirements for the degree of Masters of Science in Psychology at Massey University, Manawatu, New Zealand

Exercise-induced physical fatigue is thought to impair the cognitive functioning, and therefore mental performance, of the brain. Intervention studies have demonstrated that phytochemical supplementation can facilitate improved cognitive and physical performance. However, little is known about phytochemical supplementations’ ability to ameliorate physical fatigue effects on cognitive performance upon congestion. To investigate this hypothesis, the present study investigated the effects phytochemical compounds, from a blackcurrant supplement, had in regards to reducing physical fatigue effects on cognitive performance while under mental loads. Seventy-two healthy participants completed >10 mins of a high intensity intermittent cycling task (HIIT) (physical fatigue cohort) or >10 mins watching an emotionally neutral documentary (control cohort). Half of the participants in each condition received a blackcurrant supplement one hour before beginning the experimental session. Baseline cognitive tasks and mood questionaries were completed before ingestion of a blackcurrant extract, again before post-task measurements were completed, and also immediately following the experimental session. Analysis of the subjective selfreports revealed that HIIT was successful at inducing physical fatigue, however, had no effect on subsequent cognitive performance. Further analyses demonstrated that supplementation with a blackcurrant extract had no influence on cognitive performance. The null results for an effect of physical fatigue on cognitive performance made interpretation of this finding difficult. Overall, effect size calculations indicated that a larger sample size would not have resulted in statistically significant findings. It was concluded that the specific high intensity intermittent exercise used in the present study, did not induce a level of fatigue in participants’ that would subsequently impair cognitive performance. Blackcurrant supplement did not demonstrate an ability to enhance cognitive performance following a physically fatiguing task. Possible explanations for these findings are discussed and some potentially useful future studies outlined in the second and third chapters

Characteristics of 2 Different Commercially Available Implants with or without Nanotopography

The aim of this study was to assess histologically and histomorphometrically the early bone forming properties after 3 weeks for 2 commercially available implants, one supposedly possessing nanotopography and one without, in a rabbit femur model. Twenty-four implants divided equally into 2 groups were utilized in this study. The first group (P-I MICRO+NANO) was a titanium oxide (TiO2) microblasted and noble gas ion bombarded surface while the second group (Ospol) was anodic oxidized surface with calcium and phosphate incorporation. The implants were placed in the rabbit femur unicortically and were allowed to heal for 3 weeks. After euthanasia, the samples were subjected to histologic sectioning and bone-implant contact and bone area were evaluated histomorphometrically under an optical microscope. The histomorphometric evaluation presented that the P-I MICRO+NANO implants demonstrated significantly higher new bone formation as compared to the Ospol implants. Within the limitations of this study, the results suggested that nanostructures presented significantly higher bone formation after 3 weeks in vivo, and the effect of chemistry was limited, which is indicative that nanotopography is effective at early healing periods

FOS Rearrangement and Expression in Cementoblastoma

Cementoblastomas are rare odontogenic tumors developing in close proximity to the roots of teeth. Due to their striking morphologic resemblance to osteoblastomas of the peripheral skeleton, we set out to determine whether cementoblastomas harbor the same FOS rearrangements with overexpression of c-FOS as has recently been described for osteoblastomas. In total, 16 cementoblastomas were analyzed for FOS expression by immunohistochemistry and for FOS rearrangements by fluorescence in situ hybridization (FISH). We observed strong and diffuse staining of c-FOS in 71% of cementoblastomas and identified a FOS rearrangement in all cases (n=3) applicable for FISH. In the remaining cases, FISH failed due to decalcification. Cementoblastomas harbor similar FOS rearrangements and show overexpression of c-FOS like osteoblastomas, suggesting that both entities might represent parts of the spectrum of the same disease

The zygomatic implant perforated (ZIP) flap: a new technique for combined surgical reconstruction and rapid fixed dental rehabilitation following low-level maxillectomy.

Abstract This aim of this report is to describe the development and evolution of a new surgical technique for the immediate surgical reconstruction and rapid post-operative prosthodontic rehabilitation with a fixed dental prosthesis following low-level maxillectomy for malignant disease. The technique involves the use of a zygomatic oncology implant perforated micro-vascular soft tissue flap (ZIP flap) for the primary management of maxillary malignancy with surgical closure of the resultant maxillary defect and the installation of osseointegrated support for a zygomatic implant-supported maxillary fixed dental prosthesis. The use of this technique facilitates extremely rapid oral and dental rehabilitation within a few weeks of resective surgery, providing rapid return to function and restoring appearance following low-level maxillary resection, even in cases where radiotherapy is required as an adjuvant treatment post-operatively. The ZIP flap technique has been adopted as a standard procedure in the unit for the management of low-level maxillary malignancy, and this report provides a detailed step-by-step approach to treatment and discusses modifications developed over the treatment of an initial cohort of patients

The influence of 1α.25-dihydroxyvitamin D3 coating on implant osseointegration in the rabbit tibia

Objectives: This study aims to evaluate bone response to an implant surface modified by 1α,25-dihydroxyvitamin D3 [1.25-(OH)2D3] in vivo and the potential link between 1.25-(OH) 2D3 surface concentration and bone response. Material and Methods: Twenty-eight implants were divided into 4 groups (1 uncoated control, 3 groups coated with 1.25-(OH)2D3 in concentrations of 10-8, 10-7 and 10-6 M respectively), placed in the rabbit tibia for 6 weeks. Topographical analyses were carried out on coated and uncoated discs using interferometer and atomic-force-microscope (AFM). Twenty-eight implants were histologically observed (bone-to-implant-contact [BIC] and new-bone-area [NBA]). Results: The results showed that the 1.25-(OH)2D3 coated implants presented a tendency to osseointegrate better than the non-coated surfaces, the differences were not significant (P > 0.05). Conclusions: The effect of 1.25-(OH)2D3 coating to implants suggested possible dose dependent effects, however no statistical differences could be found. It is thought that the base substrate topography (turned) could not sustain sufficient amount of 1.25-(OH)2D3 enough to present significant biologic responses. Thus, development a base substrate that can sustain 1.25-(OH)2D3 for a long period is necessary in future studies

Infection, vascularization, remodelling - are stem cells the answers for bone diseases of the jaws?

Osteonecrosis after craniofacial radiation (ORN), osteomyelitis and bisphosphonates related necrosis of the jaw (BRONJ) are the predominant bone diseases in Cranio- and Maxillofacial surgery. Although various hypothesis for the pathophysiological mechanisms including infection, altered vascularisation or remodelling exist, the treatment is still a challenge for clinicians. As the classical pharmacological or surgical treatment protocols have only limited success, stem cells might be a promising treatment option, indicated by recently published data

Stock Versus CAD/CAM Customized Zirconia Implant Abutments - Clinical and Patient-Based Outcomes in a Randomized Controlled Clinical Trial

BackgroundSingle-tooth replacement often requires a prefabricated dental implant and a customized crown. The benefits of individualization of the abutment remain unclear.PurposeThis randomized controlled clinical trial aims to study potential benefits of individualization of zirconia implant abutments with respect to preservation of marginal bone level and several clinical and patient-based outcome measures.Material and MethodsFifty participants with a missing premolar were included and randomly assigned to standard (ZirDesign, DentsplySirona Implants, Molndal, Sweden) or computer aided design/computer aided manufacturing (CAD/CAM) customized (Atlantis, DentsplySirona Implants, Molndal, Sweden) zirconia abutment therapy. Peri-implant bone level (primary outcome), Plaque-index, calculus formation, bleeding on probing, gingiva index, probing pocket depth, recession, appearance of soft tissues and patients' contentment were assessed shortly after placement and one year later.ResultsNo implants were lost and no complications related to the abutments were observed. Statistically significant differences between stock and CAD/CAM customized zirconia abutments could not be demonstrated for any of the operationalized variables.ConclusionThe use of a CAD/CAM customized zirconia abutment in single tooth replacement of a premolar is not associated with an improvement in clinical performance or patients' contentment when compared to the use of a stock zirconia abutment.</p