63 research outputs found
Ukuran Organ Sistem Reproduksi Itik Jantan Yang Disuplementasi Probiotik Mep+ Berbagai Dosis Selama 30 Hari
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
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
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
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
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)
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
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
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
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
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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