Utang Luar Negeri Indonesia: Implikasi Dan Manfaat Dalam Pembangunan Nasional

Pendanaan pembangunan nasional dalam PJPT I (1969/70-1993/94) dalam APBN menunjukkan, bahwa negara kita belum berhasil menggali sumber dana pembangunan dari dalam negeri (tabungan pemerintah), terjadi peningkatan ketergantungan sumber dana pembangunan dari utang luar negeri dalam Pelita IV serta secara mencolok; sebagai dampak kemerosotan harga minya bumi, sedang di lain pihak penerimaan nonmigas (Pajak) belum dapat menjadi andalan

MICROBICIDAL AND CYTOTOXIC ACTIONS OF METHANOLIC CRUDE EXTRACTS OF A. MULTIFLORA.-ROXB

Objective: The study presented here was carried out for the evaluation of microbicidal and cytotoxic potential of methanolic extract of leaves of Ammannia multiflora. The microbicidal activity was tested against 16 bacteria. The cytotoxic activity was tested against brine shrimp species Artemia salina. Methods: The microbicidal effect of the plant extracts was tested in vitro by the disc diffusion method with 16 standard bacterial strains. Artemia salina; a brine shrimp species; was used to assess cytotoxic activity. Results: Among the subjected 16 different bacteria; in case of S. boydii; the zone of inhibition was higher (22.0 mm) at 500 µg/ml concentration. Whereas in the case of E. foecalis, the zone of inhibition was higher (8.0 mm) at 250 µg/ml concentration. In S. pyogenes; zone of inhibition was higher at 500 µg/ml concentration (13.0 mm). The growth of S. saprophyticus (9 mm), S. agalactiae (7 mm) and S. sonnei (7 mm) was also moderately inhibited. The extract exhibited effectiveness against 7 different species of bacteria out of 16. Cytotoxic effect was determined in lethality bioassay of brine shrimp species Artemia salina. The plant extracts exhibited significant cytotoxic property which was reflected in LC50 and LC90values of 20.42µg/ml and 229.09 µg/ml respectively. Cytotoxic property was found as dose dependent manner. Conclusion: These results suggest that, Ammania multiflora can effectively be used for its significant microbicidal action. It is also effective as cytotoxic agent and thus, could justify its use in traditional medicine

Shear Bond Strength of Composite to Dentin after Various Drying Techniques and Its Micro Morphological Analysis under SEM - An In-vitro Study

Aim: The present in-vitro study compared the shear bond strength of composite to dentin after various methods to remove excess water from the dentin. Materials and Methods: Sixty extracted human molars were used for the study that were randomly divided into 6 groups with 4 experimental (three-way syringe, cotton pellet, mini sponge, tissue paper)  and 2 control groups (over dry, over wet). The exposed dentin surfaces were acid etched with 37% phosphoric acid for 20 seconds followed by thorough rinsing with water for 15 seconds. The teeth were kept visibly moist in all the experimental groups. Adhesive agent was applied on all specimens and restored with composite resin. The specimens were then subjected to shear bond strength tests and one specimen from each group was randomly selected for micro-morphological analysis of dentin. Results and Conclusion: Statistical analysis was done and data were tabulated to determine average shear bond strength for each group.  The results indicated that the mean values in the group using tissue paper were significantly higher than the mean values in all the other experimental groups and control groups

High frequency of SEN virus infection in thalassemic patients and healthy blood donors in Iran

<p>Abstract</p> <p>Background</p> <p>SEN virus is a blood-borne, circular ssDNA virus and possessing nine genotypes (A to I). Among nine genotypes, SENV-D and SENV-H genotypes have the strong link with patients with unknown (none-A to E) hepatitis infections. Infection with blood-borne viruses is the second important cause of death in thalassemic patients. The aim of this study was to determine the frequency of SENV-D and SENV-H genotypes viremia by performing nested-PCR in 120 and 100 sera from healthy blood donors and thalassemic patients in Guilan Province, North of Iran respectively. Also, to explicate a possible role of SEN virus in liver disease and established changes in blood factors, the serum aminotransferases (ALT and AST) and some of the blood factors were measured.</p> <p>Results</p> <p>Frequency of SENV-D, SENV (SENV-H or SENV-D) and co-infection (both SENV-D and SENV-H) viremia was significantly higher among thalassemic patients than healthy individuals. Frequency of SENV-H viremia was significantly higher than SENV-D among healthy individuals. In comparison to SENV-D negative patients, the mean of mean corpuscular hemoglobin was significantly higher in SENV-D positive and co-infection cases (<it>P </it>< 0.05). The means of AST and ALT were significantly higher in thalassemic patients than healthy blood donors, but there were not any significant differences in the means of the liver levels between SENV-positive and -negative individuals in healthy blood donors and thalassemic patients. High nucleotide homology observed among PCR amplicon's sequences in healthy blood donors and thalassemic patients.</p> <p>Conclusions</p> <p>The high rate of co-infection shows that different genotypes of SENV have no negative effects on each other. The high frequency of SENV infection among thalassemic patients suggests blood transfusion as main route of transmission. High frequency of SENV infection in healthy individuals indicates that other routes rather than blood transfusion also are important. Frequency of 90.8% of SENV infection among healthy blood donors as well as high nucleotide homology of sequenced amplicons between two groups can probably suggest that healthy blood donors infected by SENV act partly as a source of SENV transmission to the thalassemic patients. In conclusion, SENV-D isolate in Guilan Province may be having a pathogenic agent for thalassemic patients.</p

Bariatric Surgery–Induced Cardiac and Lipidomic Changes in Obesity‐Related Heart Failure with Preserved Ejection Fraction

Objective To determine the effects of gastric bypass on myocardial lipid deposition and function and the plasma lipidome in women with obesity and heart failure with preserved ejection fraction (HFpEF). Methods A primary cohort (N = 12) with HFpEF and obesity underwent echocardiography and magnetic resonance spectroscopy both before and 3 months and 6 months after bariatric surgery. Plasma lipidomic analysis was performed before surgery and 3 months after surgery in the primary cohort and were confirmed in a validation cohort (N = 22). Results After surgery‐induced weight loss, Minnesota Living with Heart Failure questionnaire scores, cardiac mass, and liver fat decreased (P < 0.02, P < 0.001, and P = 0.007, respectively); echo‐derived e′ increased (P = 0.03), but cardiac fat was unchanged. Although weight loss was associated with decreases in many plasma ceramide and sphingolipid species, plasma lipid and cardiac function changes did not correlate. Conclusions Surgery‐induced weight loss in women with HFpEF and obesity was associated with improved symptoms, reverse cardiac remodeling, and improved relaxation. Although weight loss was associated with plasma sphingolipidome changes, cardiac function improvement was not associated with lipidomic or myocardial triglyceride changes. The results of this study suggest that gastric bypass ameliorates obesity‐related HFpEF and that cardiac fat deposition and lipidomic changes may not be critical to its pathogenesis

Epoxidación de ésteres metílicos derivados del aceite de Jatropha: Optimización del estudio

The optimization of the epoxidation reaction of methyl esters obtained from Jatropha oil was appraised. Response surface methodology (RSM) based on a central composite rotatable design (CCRD) was employed for the experimental design. Four reaction variables namely hydrogen peroxide/ C=C mole ratio, formic acid/C=C mole ratio, reaction temperature and reaction time were evaluated. The optimum epoxidation conditions calculated by the quadratic model were 3.12 moles of hydrogen peroxide/C=C moles, 0.96 moles of formic acid/C=C moles, a reaction temperature of 70.0 °C and a reaction time of 277 minutes. A reaction optimized by the proposed process parameters provided a yield of 92.89 ± 1.29 wt.% with relatively improved reaction time. Hydrogen peroxide concentration and reaction temperature were found to be the most significant variables while reaction temperature and hydrogen peroxide showed strong interactions. The epoxidized methyl esters were analyzed using FT-IR, 1H NMR and 13C NMR techniques. This study suggested relatively higher molar ratio of formic acid required than was proposed in the literature.Se ha evaluado la optimización de la reacción de epoxidación de ésteres metílicos obtenidos a partir de aceite de Jatropha. Se ha empleado para el diseño experimental una metodología de superficie de respuesta (RSM), basada en un diseño compuesto central giratorio (CCRD). Cuatro variables de la reacción fueron evaluadas: relación molar peróxido de hidrógeno/C=C, relación molar ácido fórmico/C=C, temperatura de reacción y tiempo de reacción. Las condiciones óptimas de epoxidación calculadas por el modelo cuadrático fueron 3.12 moles de peróxido de hidrógeno/C=C moles, 0.96 moles de ácido fórmico/C=C moles, una temperatura de reacción de 70.0 °C y un tiempo de reacción de 277 minutos. Una reacción optimizada mediante los parámetros propuestos del proceso proporciona un rendimiento de 92.89 ± 1.29% en peso con un tiempo de reacción relativamente mejorado. La concentración de peróxido de hidrógeno y la temperatura de la reacción fueron las variables más significativas, además la temperatura de la reacción y la concentración de peróxido de hidrógeno mostraron fuertes interacciones. Los ésteres metílicos epoxidados se analizaron mediante FT-IR, 1H RMN y RMN de 13C. Este estudio indica que se requiere una proporción molar relativamente mayor de ácido fórmico que la propuesta en la literatura