63 research outputs found

    Ukuran Organ Sistem Reproduksi Itik Jantan Yang Disuplementasi Probiotik Mep+ Berbagai Dosis Selama 30 Hari

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    Probiotics MEP+ can increase fowl weight and weft efficiency, therefore it is important to know probiotics MEP+ effect at different dosage toward reproduction aspect. This research aimed to examine duck reproduction organ size suplemented with probiotics MEP+ with different dosage within 30 days. This research used Completely Randomized Design (CRD) with 4 treatments with different dosages within 30 days which was without probiotic\u27s application or control (K), 0,75 ml/kg wefts (P1) dose, 1,5 ml/kg wefts (P2) dose, a n d 3 ml/kg wefts (P3) dose. Each treatment repeated 8 times. Total 40 ducks raised in floor dry cage system. At 31st day of treatment duck reproduction system organ was measured. Whole results show increase average data (±SD) for weight of both right and left testis, and liver weight with highly probiotics dosage it, however the analysis result statistic not significant (P>0,05) except weight of right left testis with duck weight or gonadosomatic indeks (GSI) were very significant (P<0,01) among all treatment at different dosages was compared control. The results is confirmed that probiotic\u27s MEP+ treatment with different dosages within 30 days gave no effect towards duck reproduction system organ size except to gonadosomatic indeks (GSI) male duck

    Profil dan Learning Outcomes Lulusan Pendidikan Akuntansi sebagai Referensi Lptk dalam Menyiapkan Guru Akuntansi Bermutu

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    The objective of this research is to stipulate the profile and learning outcome of the graduates of the Study Program of Accounting Education, the Faculty of Teacher Training and Education, Sebelas Maret University. It is intended to help the Indonesian government to prepare the qualified teacher of Accounting subject matter according to the perceptions of alumni, lecturers, stakeholders, profession associations, and decision makers.The data sources of research were 96 students, 248 alumni, 15 lecturers, 15 stakeholders, Association of Accounting Educator Profession of Indonesia, and Chief of the Study Program of Accounting Education, Sebelas Maret University. The data of research were collected through observation, documentation, and FGD. They were analyzed by using the qualitative approach.The results of research show that (1) the profile of the graduates of the Study Program of Accounting Education includes the prospective teachers of Accounting subject matter for Vocational High Schools and Senior Secondary Schools who major in Introduction to Accounting and Finance, Number Processing/Spreadsheet, Banking, Accounting of Service and Trading Company, Financial Accounting, Accounting Computer, Accounting of Manufacturing Company, and Tax Administration; prospective Accounting instructors at non-formal education programs;; edupreneurs in the field of accounting and finance; junior researchers in the field of accounting and finance; and assistant accountants, and (2) the learning outcome expected includes attitude, knowledge, general and special skills, characters, and transferable soft skills which are relevant with the demands of the general public

    Hydrophobic Effect of Alkyl Groups Stabilizing Self-Assembled Colloids in Water

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    Self-assembling behavior of hydrophobic molecules in water confirms that the hydrophobic effect (HE) of alkyl groups stabilizes the aqueous colloids. Fe­(CO)­{CO­(CH<sub>2</sub>)<sub><i>n</i>−1</sub>CH<sub>3</sub>}­(Cp)­(PPh<sub>3</sub>) molecules (FpC<sub><i>n</i></sub>) with a Fp head and alkyl tail are water-insoluble. FpC<sub>1</sub> aggregates in water precipitated in hours, whereas the hydrophobic interaction (HI) of long alkyl groups drove FpC<sub><i>n</i></sub> (<i>n</i> = 6–18) molecules assemble into colloids in water. The alkyl tails interacted and stretched as indicated by IR analysis, while the separation of Fp head groups at the surface of colloids was indicated by the redox behavior of Fe elements. The molecules therefore arranged into a proposed “Y” shape with hydration cavities. The IR and cyclic voltammetry (CV) analyses indicated that the longer the alkyl tail, the larger the hydration cavity and the stronger the HI. Both HI and hydrophobic hydration (HH) were identified as the HE stabilizing the colloids in water. This knowledge is applicable for a broad range of disciplines, including biology, chemistry, and material science

    Intermolecular Interactions of CpFePPh<sub>3</sub>(CO)CO(CH<sub>2</sub>)<sub>5</sub>CH<sub>3</sub>: From a Crystalline Solid to a Supramolecular “Iron-Truss” Polymer

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    PPh<sub>3</sub>CpFe­(CO)­(CO)­(CH<sub>2</sub>)<sub>5</sub>CH<sub>3</sub> (FpC6) spontaneously forms supramolecular polymers in the solid state. The polymers crystallize slowly over a period of one month and can be recovered by melting the crystals at 65 °C. The rheological profile of FpC6 fits the Maxwell model indicating the presence of chain entanglement. Crystal analysis reveals that FpC6 is able to assemble, via cooperative π–π interactions and weak C–H···O hydrogen bonding, into a duplex chain structure with truss arrangement of iron atoms. Powder X-ray diffraction (PXRD) of the polymers shows a double-peak pattern, characteristic for duplex ladder polymers. FTIR/ATR analysis further supports that carbonyl groups are involved in C–H···O hydrogen bonding responsible for the self-assembly. This discovery opens up new design motifs for organometallic supramolecular polymers

    UV-Absorbing Cellulose Nanocrystals as Functional Reinforcing Fillers in Poly(vinyl chloride) Films

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    Ultraviolet (UV)-responsive poly­(cinnamoyloxy ethyl methacrylate) (PCEM) was grafted on cellulose nanocrystals (CNCs) via the surface-initiated atom transfer radical polymerization technique. The resultant PCEM-grafted CNCs (PCEM-<i>g</i>-CNCs) exhibit high UV absorption properties and undergo cross-linking when subjected to UV radiation. When the PCEM-<i>g</i>-CNC nanohybrids were incorporated into poly­(vinyl chloride) (PVC) matrix, transparent nanocomposite films with UV-blocking characteristics were obtained. Comparison of the optical and mechanical properties of the films before and after UV irradiation confirmed that the PCEM-<i>g</i>-CNCs are excellent thermal and UV stabilizers for PVC. In addition, the tensile properties of the PVC film were increased significantly and further enhanced after UV irradiation

    Migration Insertion Polymerization (MIP) of Cyclo­penta­dienyl­dicarbonyl­diphenyl­phosphino­propyliron (FpP): A New Concept for Main Chain Metal-Containing Polymers (MCPs)

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    We report a conceptually new polymerization technique termed migration insertion polymerization (MIP) for main chain metal-containing polymer (MCP) synthesis. Cyclopenta­dienyl­dicarbonyl­diphenyl­phosphino­propyliron (FpP) is synthesized and polymerized via MIP, resulting in air stable poly­(cyclo­penta­dienyl­carbonyl­diphenyl­phosphino­butanoyliron) (PFpP) displaying narrow molecular weight distribution. The backbone of PFpP contains asymmetric iron units connected by both phosphine coordination and Fe-acyl bonds, which is representative of a new type of polymer. Furthermore, PFpP is tested to be soluble in a wide range of organic solvents and shown to possess reactive Fp end groups. PFpP amphiphiles have therefore been prepared via an end group migration insertion reaction in the presence of oligoethylene phosphine

    One-Pot Controlled Synthesis of Homopolymers and Diblock Copolymers Grafted Graphene Oxide Using Couplable RAFT Agents

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    An original strategy is presented to synthesize homopolymers and diblock copolymers grafted graphene oxide by simultaneous coupling reaction and RAFT process. Z-functionalized <i>S</i>-methoxycarbonylphenylmethyl <i>S′</i>-3-(trimethoxysilyl)­propyltrithiocarbonate (MPTT) and R-functionalized <i>S</i>-4-(trimethoxysilyl)­benzyl <i>S′</i>-propyltrithiocarbonate (TBPT) were used as couplable RAFT agents to prepare the target nanocomposites. Under similar conditions, MPTT-mediated grafting reaction was liable to afford grafted chains with shorter chain length, narrower molecular weight distribution and lower grafting density than TBPT-based reaction owing to increased shielding effect and different grafting process. The grafted polymers had nearly controlled molecular weight and polydispersity ranging between 1.11 and 1.38, and the apparent molar grafting ratio was estimated to be 73.6–220 μmol/g as the molecular weights of grafted polymers were in the range of 3980–12500 g/mol. The improved solubility and dispersibility of GO–polymer composites in various solvents comprising hexane and water confirmed their amphiphilicity. The grafting process offers an opportunity to alter GO morphologies, and surface morphologies involving nanosheets, nanoparticles, and nanorods were observed as the composites were dispersed in different solvents with the aid of sonication treatment. This tandem approach is promising for surface modification of solid substrates with hydroxyl surface due to its mild conditions, straightforward synthesis and good controllability

    Synthesis, Cyclization, and Migration Insertion Oligomerization of CpFe(CO)<sub>2</sub>(CH<sub>2</sub>)<sub>3</sub>PPh<sub>2</sub> in Solution

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    Cyclopentadienyldicarbonyl­[(diphenylphosphino)­propyl]­iron (CpFe­(CO)<sub>2</sub>(CH<sub>2</sub>)<sub>3</sub>PPh<sub>2</sub>, FpP), containing both Fp and phosphine groups, was synthesized as a difunctional monomer for migration insertion polymerization (MIP). FpP underwent either intra- or intermolecular reactions in solution. When a solution with low FpP concentration (ca.1% by weight) was left at 25 °C, FpP was quantitatively converted to the five-membered-ring species <b>1</b> via CO release. On the other hand, when a solution at the same low concentration was heated to 70 °C in the dark, an intramolecular migration insertion reaction was promoted, leading to a high conversion of FpP (ca. 70%) to the six-membered cyclic Fp acyl derivatives <b>2</b>. At the same temperature with an increase in the concentration of FpP to 10% by weight, intermolecular MIR became predominant (ca. 90%) with a low yield of ring molecules (ca. 10%). Solution polymerization of FpP (ca. 20% by weight) was therefore performed at 70 °C, which generated both THF-soluble and -insoluble macromolecules via intermolecular migration insertion reactions. The resulting macromolecules were fully characterized by using FT-IR, solution- and solid-state <sup>31</sup>P, and <sup>13</sup>C NMR. The soluble macromolecules exhibit a molecular weight of ca. 4200 with a PDI value of ca. 1.24, as characterized by GPC. A kinetic study shows that the polymerization follows a step-growth mechanism

    Self-Assembly of a Strong Polyhedral Oligomeric Silsesquioxane Core-Based Aspartate Derivative Dendrimer Supramolecular Gelator in Different Polarity Solvents

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    Aromatic groups are introduced into the end peripherals of polyhedral oligomeric silsesquioxane (POSS) core-based organic/inorganic hybrid supramolecules to get a novel dendrimer gelator POSS-Z-Asp­(OBzl) (POSS-ASP), which have eight aspartate derivative arms to make full use of strong π–π stacking forces to get strong supramolecular gels in addition to multiple hydrogen bindings and van der Waals interactions. POSS-ASP can self-assemble into three-dimensional nanoscale gel networks to provide hybrid physical gels especially with strong mechanical properties and fast-recovery behaviors. Two totally different morphologies of the connected spherical particle structures and banded ultralong fibers are observed owing to the polarity of solvents confirmed by the scanning electron microscopy, polarized optical microscopy, and transmission electron microscopy techniques, expecting the existing various self-assembly models and illustrating the peripherals of the dendrimer and the polarity of solvents having huge influences in the supramolecular self-assembly mechanism. What is more, the thermal stability, rheological properties, and network architecture information have also been investigated via tube-inversion, rotational rheometer, and powder X-ray diffraction methods, the results of which confirm the two different gel formation mechanisms that make POSS-ASP to exhibit two totally different thermal and mechanical properties. Such a study reports a new gelation system in organic or organic/aqueous mixed solvents, which can be helpful for investigating the relationship of dendritic supramolecular gelation and different polarity solvents during the supramolecular self-assembly process of gelators

    table_9_Transcriptome Analysis of Bronchoalveolar Lavage Fluid From Children With Mycoplasma pneumoniae Pneumonia Reveals Natural Killer and T Cell-Proliferation Responses.doc

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    Background<p>Mycoplasma pneumoniae pneumonia (MPP) is one of the most common community-acquired pneumonia; this study is to explore the immune-pathogenesis of children MPP.</p>Methods<p>Next-generation transcriptome sequencing was performed on the bronchoalveolar lavage fluid cells from six children with MPP and three children with foreign body aspiration as control. Some of the results had been validated by quantitative real-time PCR in an expanded group of children.</p>Results<p>Results revealed 810 differentially expressed genes in MPP group comparing to control group, of which 412 genes including RLTPR, CARD11 and RASAL3 were upregulated. These upregulated genes were mainly enriched in mononuclear cell proliferation and signaling biological processes. Kyoto encyclopedia of genes and genomes pathway analysis revealed that hematopoietic cell linage pathway, natural killer cell-mediated cytotoxicity pathway, and T cell receptor signaling pathway were significantly upregulated in MPP children. In addition, significant alternative splicing events were found in GNLY and SLC11A1 genes, which may cause the differential expressions of these genes.</p>Conclusion<p>Our results suggest that NK and CD8+ T cells are over activated and proliferated in MPP children; the upregulated IFNγ, PRF1, GZMB, FASL, and GNLY may play important roles in the pathogenesis of children MPP.</p
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