286 research outputs found
Pengaruh Motivasi terhadap Kinerja Pegawai (Studi pada Kantor Kecamatan Ratahan Kabupaten Minahasa Tenggara)
Southeast Minahasa Regency is the Effect of Motivation on Employee Performance is still notcontributed optimally. Factors that affect employee motivation, among others, job satisfactionand the amount recived by an employee kompensasi. To do a job, the employee should have ahigh performance. Therefore, it is necessary to effect a good motivation in order to improve theperformance of the employees.Motivation is the driving goal, the real goal being the main driving force for a person toattempt to obtain or achieve what he wanted either positive or negative. Performance is the resultof the quality and quantity of work achieved by a person in performing its functions inaccordance with the responsibilities given to the employees. The purpose of this study was todetermine the motivation is there any influence on the performance of employees at the DistrictOffice Ratahan Southeast Minahasa Regency.In this study, the method used is quantitative analysis method. While data analysistechnique used is the technique of correlation between variables to prove the effect of motivationon employee performance. Based on the results of research conducted and followed by analyzingthe data obtained, then the result is that there is a strong relationship between the effect ofmotivation on employee performance for 0.665%, this means working hypothesis acceptablealternative. The result were obtained coefficient determinant of the remaining 44.22%, 55.78%more influenced by other factors not included in this study
Implementation and Reconfiguration of Robot Operating System on Human Follower Transporter Robot
Robotic Operation System (ROS) is an im- portant platform to develop robot applications. One area of applications is for development of a Human Follower Transporter Robot (HFTR), which can be considered as a custom mobile robot utilizing differential driver steering method and equipped with Kinect sensor. This study discusses the development of the robot navigation system by implementing Simultaneous Localization and Mapping (SLAM)
Genetic diversity, physiology and production of Chinese water chestnut (Eleocharis dulcis (Burm. f.) Trin. ex Henschel)
Chinese water chestnut (Eleocharis dulcis (Burm. f.) Trin. ex Henschel) is a new aquatic vegetable to Australia. Lack of research on this crop greatly limits the understanding of its production performance. Therefore, studies on several aspects of this crop were undertaken to provide a scientific basis for improvement in yield and quality.
Firstly, the genetic relationship of Chinese water chestnuts growing in Australia was assessed by using random amplified polymorphic DNAs (RAPDs). For the genetic
analysis of wild putative E. dulcis, three primers separated the samples from 9 out of 10 sites into two distinct groups: E. dulcis and E. sphacelata. In the genetic analysis of samples from cultivated E. dulcis plants, 96 RAPD markers generated by 14 primers separated the samples from Taiwan (var. Shu-Lin), Hangzhou, China (cv. Da Hong Bao), New South Wales, Australia (unknown variety) and the USA (unknown variety) from the rest of the samples from Australia. The remaining samples were too closely related (0.74-4.4% dissimilarity) to be differentiated.
Secondly, the possibility to extend availability of fresh Chinese water chestnut corms by physiological manipulation (photoperiod control) was evaluated in four
photoperiod experiments. When measured, above -ground growth and dry matter production of the whole plants were not significantly affected by photoperiods (8-24 h). However, corm formation was strongly retarded by long days and promoted by the photoperiod which was shorter than a critical value. Under shorter days, significantly more dry matter was shifted towards corms as well as rhizomes, an
effect that became more pronounced as the period of treatment was lengthened.
Thirdly, Chinese water chestnut production in relation to harvest date and cold storage of 'seed' corms was investigated in two experiments. In the first experiment,
March -planted plants were harvested from July to September. Mature corms from each harvest were subsequently stored at 4°C. In terms of corm formation and
maturation as well as soluble sugar concentration in mature corms, the harvests in August were more favorable. After storage at 4°C for 86 d (harvest on 24 September)
to 159 d (harvest on 15 July), no sign of rot nor flesh deterioration was observed. Loss of fresh weight ranged from 0.46% to 6% with the lower value associated with
the shorter storage duration. Corm germination was also favored by shorter storage period. The highest values for the number of sprouts and stems per viable corm and
the length of the longest stem per viable corm were obtained from the harvests on 29 Â July (139 d storage), 13 August (130 d storage) and 27 August (116 d storage)
respectively. In the second experiment, corms harvested on different dates over the period July to November were stored at 4°C for four different periods prior to planting. Both harvest date and cold -storage duration exhibited significant influence on soluble solid content (°Brix) with the highest values for the first harvest and no cold storage, although the average °Brix value was low for all treatments. Harvest
date and cold -storage duration also showed significant effects on corm sprouting performance evaluated as the number of sprouts and stems, and the length of the
longest stem per viable corm. Average yield per plant showed little difference across `seed' corm harvest dates with the exception of the last. The fresh weight of individual corms was significantly affected by 'seed' corm harvest date but not by storage duration.
Fourthly, the possibility of Chinese water chestnut in vitro culture was investigated with several different explants and culture media. Among all the explants examined, only young rhizome nodes and tips, dormant buds and corm skin with bud scars (buds removed) responded to in vitro culture by the production of shoots or shoot clusters. Root initiation was readily stimulated in the derived microshoots. The test
tube plantlets were successfully transferred to the screenhouse, and their subsequent performance compared favorably with that of corm -derived plants.Â
Lastly, a putative Chinese water chestnut disease, tip yellowing and brown stem lesions, which was observed in the greenhouse and in the field, was studied. As no
corresponding symptoms showed up when healthy plants were inoculated with spores derived from the isolates obtained from affected tissue, a nutritional disorder,
perhaps potassium deficiency, was therefore suggested to have been responsible for the symptoms.
</p
Tandem Chemical Depolymerization and Photoreforming of Waste PET Plastic to High-Value-Added Chemicals
Photoreforming of poly(ethylene terephthalate) (PET)
wastes to
high-value-added chemicals is an emerging and promising approach.
Nonetheless, a major obstacle is the harsh alkaline pretreatment (COH– = 5–10 M) to depolymerize
PET, resulting in a surge in processing costs and also posing great
challenges to subsequent photocatalytic devices, catalysts, and photocatalytic
efficiency. Herein, we introduce a tandem process of chemical depolymerization
and photoreforming of waste PET plastics. Depolymerization of PET
to monomers is achieved through an intramolecular hydrolysis mechanism
on a binuclear zinc catalyst under mild conditions (COH– ≤ 0.1 M and T ≤
60 °C). Compared with the traditional harsh alkali pretreatment,
the depolymerization rate can be increased by nearly an order of magnitude
due to the proximity effect of the bimetallic sites. Technoeconomic
analysis shows that processing 50,000 tons of plastic annually can
save 15.2 million USD. The photoreforming of PET to formic acid and
H2 with an impressive production rate of 2000 μmol
gcat–1 h–1 was achieved
on an ultrasmall carbon nitride nanosphere photocatalyst, which is
nearly 5-fold higher than the corresponding strong alkali pretreatment
system. Mechanism research reveals high photocatalytic activity thanks
to the mild PET pretreatment and the efficient electron–hole
separation caused by the ultrasmall carbon nitride nanosphere size
structure and the electron capture effect of metal Pt. We also demonstrate
a gram-scale integrated process for real-world PET plastic wastes
including water bottles, clothing fibers, towels, carpets, and mixed
plastics containing PET. Our study establishes a new concept of tandem
catalysis to reduce the harsh pretreatment of PET by using a synthetic
catalyst in polyester plastic photoreforming technology
Quantification of birefringence intensity in normal siblings (<i>Sib</i>, open bars) and mutated larvae of <i>Sapje</i> (<i>Sap</i>, filled bars) and <i>Candyfloss</i> (<i>Caf</i>, hatched bars), at 4 dpf.
<p>Larvae were treated with 0.1% DMSO or 50 μM BTS. n = 3–4 in each group. **, p< 0.01 *** p< 0.001 compared to the <i>Sib</i> in DMSO, ###, p<0.001 compared to the mutants (<i>Caf</i> or <i>Sap</i>) in DMSO (ANOVA, Holm-Sidak method). No significant difference was detected between the BTS treated groups.</p
Recovery in E3 medium after BTS immobilization induces structural changes in <i>Candyfloss</i> (<i>Caf</i>) larvae at 5 dpf.
<p>Panel A-C shows birefringence microscopy of a Sibling (<i>Sib</i>), <i>Sapje</i> (<i>Sap</i>) and <i>Caf</i> larva from one-day E3 medium recovery. Panel D summarizes the corresponding force measurements of two mutant strains at 5dpf. <i>Sap</i>: filled bars; <i>Caf</i>: hatched bars; <i>Sib</i>: open bars. ***, p<0.001 compared to the <i>Sib</i> in DMSO, ##, p<0.01 compared to the <i>Sap</i> in DMSO, §§, p<0.01 compared to the <i>Sib</i> in BTS (ANOVA, Holm-Sidak method). No significant difference was detected between the BTS treated <i>Sap</i> groups. n = 3–10 in <i>Sib</i> groups; n = 3 in <i>Sap</i> and <i>Caf</i> groups.</p
Early immobilization by BTS prevents muscle structural changes in <i>Candyfloss</i> (<i>Caf</i>) mutant larvae and their normal siblings (<i>Sib</i>) at 4 dpf.
<p>Upper panels: birefringence microscopy of <i>Caf</i> and siblings from 0.1% DMSO and 50 μM BTS treatment respectively. Lower panels: whole mount preparations with Rhodamine phalloidin staining. Arrows indicate altered areas. These illustrations were typical of n = 6 Rhodamine phalloidin stained samples per each group, in 3 treatment sets. Scale bars: 1 mm (upper); 50 μm (lower).</p
Active force measurements from <i>Sapje (Sap)</i>, <i>Candyfloss (Caf)</i> mutant larvae and their siblings (<i>Sib</i>) at 4 dpf.
<p>Panel A -C show representative force traces of single twitch contraction from a sibling, <i>Sap</i> and <i>Caf</i> mutant larva respectively. Panel D shows the summarised data from 4 dpf <i>Sap</i> (filled bars), <i>Caf</i> mutant (hatched bars) and <i>Sib</i> larvae (open bars) with, or without BTS immobilization. ***, p<0.001 compared to the <i>Sib</i> in DMSO (ANOVA, Holm-Sidak method). No significant difference was detected between the BTS treated groups. n = 4–10 in <i>Sib</i> groups; n = 3–5 in <i>Sap</i> and <i>Caf</i> groups.</p
General development of zebrafish 4 dpf larvae from <i>Sapje</i> and <i>Candyfloss</i> mutants (<i>Sap</i>, <i>Caf</i>) and from their normal siblings (<i>Sib</i>), after incubation with 0.1% DSMO or 50 μM BTS; n = 3–5 in each group.
<p>General development of zebrafish 4 dpf larvae from <i>Sapje</i> and <i>Candyfloss</i> mutants (<i>Sap</i>, <i>Caf</i>) and from their normal siblings (<i>Sib</i>), after incubation with 0.1% DSMO or 50 μM BTS; n = 3–5 in each group.</p
Early immobilization by BTS prevents muscle structural changes in <i>Sapje</i> (<i>Sap</i>) mutant larvae and their normal siblings (<i>Sib</i>) at 4 dpf.
<p>Upper panels: birefringence microscopy of <i>Sap</i> and siblings from 0.1% DMSO and 50 μM BTS treatment respectively. Lower panels: whole mount preparations with Rhodamine phalloidin staining. Arrows indicate altered areas. These illustrations were typical of n = 6 Rhodamine phalloidin stained samples per each group, in 3 treatment sets. Scale bars: 1 mm (upper); 50 μm (lower).</p
- …