Penerapan nilai-nilaimurnidalam kalangan pelajar Sarjana muda pendidikan teknik dan vokasional semasa Menjalankan amali di makmal

Nilai murni ialah nilai yang menjadi asas kepada pembentukan akhlak dan amat penting untuk diserapkan kepada setiap individu khususnya kepada golongan pelajar. Namun demikian menurut kajian-kajian lepas, nilai murni masih kurang diterapkan dengan memuaskan dalam kalangan pelajar terutamanya semasa menjalankan keija amali di makmal. Oleh yang demikian kajian ini dijalankan bagi mengenal pasti sejauh mana pelajar dan pensyarah menerapkan nilai-nilai murni semasa proses pengajaran dan pembelajaran di makmal. Seramai 226 orang pelajar Saijana Muda Pendidikan Teknik dan Vokasional (PTV) menjadi responden dalam kajian ini. Soal selidik merupakan instrumen utama dalam kajian ini di samping temu bual dan pemerhatian sebagai instrumen sokongan. Data-data dikumpulkan dan dianalisis menggunakan perisian SPSS Versi 12.0 bagi mendapatkan min, sisihan piawai dan inferensi ANOVA manakala analisis kandungan bagi data temu bual dan pemerhatian. Dapatan kajian menunjukkan pelajar menerapkan kesemua nilai murni yang terlibat dalam kajian ini. Walau bagaimanapun didapati hanya sebahagian sahaja pensyarah menerapkan nilai-nilai murni kepada pelajar semasa proses pengajaran dan pembelajaran di makmal. Oleh yang demikian, pengkaji mengemukakan beberapa cadangan untuk memastikan pensyarah dan pelajar menerapkan nilai-nilai murni antaranya ialah pihak Universiti Tun Hussein Onn Malaysia (UTHM) perlu membuat penyeliaan dari masa ke semasa bagi memastikan pensyarah dan pelajar bersama-sama menerapkan nilai-nilai murni semasa proses pengajaran dan pembelajaran di makmal

Cloning of the C-terminal cytoplasmic fragment of the tar protein and effects of the fragment on chemotaxis of Escherichia coli

A gene encoding only the C-terminal portion of the receptor-transducer protein Tar of Escherichia coli was constructed. The gene product was detected and localized in the cytoplasmic fraction of the cell by immunoblotting with anti-Tar antibodies. The C-terminal fragments from wild-type and mutant tar genes were characterized in vivo. The C-terminal fragment generated from tar-526, a mutation that results in a dominant "tumble" phenotype, was found to be deamidated and methylated by the CheB and CheR proteins, respectively. The C-terminal fragment derived from a wild-type gene was poorly deamidated, and the C-terminal fragment derived from tar-529, a dominant mutant with a "smooth swimming" phenotype, was not apparently modified. Cells carrying the C-terminal fragment with the tar-526 mutation as the sole receptor-transducer protein showed a high frequency of tumbling and chemotaxis responses to changes in intracellular pH. These results suggest that the cytoplasmic C-terminal fragment of Tar retains some of the functions of the whole protein in vivo

High temperature fatigue characteristics of P/M and hot-forged W-Re and TZM for X-ray target of CT scanner

The fatigue strengths at 1000 °C of layered W-Re/TZM, bulk W-Re and bulk TZM for x-ray target materials were successfully evaluated under load-controlled four-point bending by introducing a fatigue failure criterion as twotimes increase of initial compliance. The obtained fatigue strengths at 1000 °C for layered W-Re/TZM and bulk WRe were similar and 280 MPa and 290 MPa at 106 cycles, respectively, while that of bulk TZM was 200 MPa. During fatigue loading at 1000 °C, dominant fatigue damage would be multiple intergranular crack nucleation and propagation, which would induce the increase of compliance. The reasonability of the fatigue failure criterion was confirmed by the fatigue process observations and the results of room temperature fatigue tests of the specimens tested at 1000 °C up to the cycles corresponding to the fatigue failure criterion

Voltage imaging of waking mouse cortex reveals emergence of critical neuronal dynamics.

Complex cognitive processes require neuronal activity to be coordinated across multiple scales, ranging from local microcircuits to cortex-wide networks. However, multiscale cortical dynamics are not well understood because few experimental approaches have provided sufficient support for hypotheses involving multiscale interactions. To address these limitations, we used, in experiments involving mice, genetically encoded voltage indicator imaging, which measures cortex-wide electrical activity at high spatiotemporal resolution. Here we show that, as mice recovered from anesthesia, scale-invariant spatiotemporal patterns of neuronal activity gradually emerge. We show for the first time that this scale-invariant activity spans four orders of magnitude in awake mice. In contrast, we found that the cortical dynamics of anesthetized mice were not scale invariant. Our results bridge empirical evidence from disparate scales and support theoretical predictions that the awake cortex operates in a dynamical regime known as criticality. The criticality hypothesis predicts that small-scale cortical dynamics are governed by the same principles as those governing larger-scale dynamics. Importantly, these scale-invariant principles also optimize certain aspects of information processing. Our results suggest that during the emergence from anesthesia, criticality arises as information processing demands increase. We expect that, as measurement tools advance toward larger scales and greater resolution, the multiscale framework offered by criticality will continue to provide quantitative predictions and insight on how neurons, microcircuits, and large-scale networks are dynamically coordinated in the brain

Polyominoes and Polyiamonds as Fundamental Domains of Isohedral Tilings with Rotational Symmetry

We describe computer algorithms that produce the complete set of isohedral tilings by n-omino or n-iamond tiles in which the tiles are fundamental domains and the tilings have 3-, 4-, or 6-fold rotational symmetry. The symmetry groups of such tilings are of types p3, p31m, p4, p4g, and p6. There are no isohedral tilings with symmetry groups p3m1, p4m, or p6m that have polyominoes or polyiamonds as fundamental domains. We display the algorithms' output and give enumeration tables for small values of n. This expands on our earlier works (Fukuda et al 2006, 2008)