High rate continuous synthesis of nanocrystalline materials in a colliding vapor stream of microdroplets

Progress in nanotechnology is driving the need of large scale synthesis of functional nanomaterials. The lack of a workforce trained on process control and scale-up of nanomaterials manufacturing, the gap between laboratories and economically practical nanofabrication and the funding strain on the survivability of startup companies all contribute to the difficulties in scaling up nanotechnologies and their commercialization [1,2]. We report here a high rate continuous synthesis of functional inorganic nanomaterials using colliding vapor stream of reagents microdroplets

High rate continuous synthesis of nanocrystalline materials in a colliding vapor stream of microdroplets

Progress in nanotechnology is driving the need of large scale synthesis of functional nanomaterials. The lack of a workforce trained on process control and scale-up of nanomaterials manufacturing, the gap between laboratories and economically practical nanofabrication and the funding strain on the survivability of startup companies all contribute to the difficulties in scaling up nanotechnologies and their commercialization [1,2]. We report here a high rate continuous synthesis of functional inorganic nanomaterials using colliding vapor stream of reagents microdroplets

Pengaruh Perendaman Pupuk Organik Cair Dengan Dosis Yang Berbeda Terhadap Pertumbuhan Rumput Laut (Caulerpa Lentillifera)

Kementerian Kelautan dan Perikanan (KKP) menargetkan produksi rumput laut pada tahun 2015 sebesar 10,3 juta ton. Salah satu jenis rumput yang sangat potensial untuk dikembangkan yaitu Caulerpa lentillifera. Rumput laut ini banyak digemari masyarakat dalam negeri maupun luar negeri karena memiliki nilai ekonomis yang sangat penting yaitu sebagai bahan makanan segar dan bahan untuk obat-obatan. Namun produksi C. lentillifera sendiri belum dapat tercukupi karena bersifat musiman dan masih banyak mengandalkan hasil dari alam. Oleh karena itu perlu adanya upaya untuk meningkatkan produksi C. lentillifera dengan cara budidaya. Salah satu faktor yang mempengaruhi pertumbuhan C. lentillifera dalam budidaya adalah ketersediaan nutrien yang biasanya dapat diperoleh dari pemberian pupuk. Berdasarkan hal tersebut, maka dilakukan penelitian pengaruh perendaman pupuk organik cair dengan dosis yang berbeda dan dosis yang terbaik terhadap pertumbuhan C. lentillifera. Peneltian ini menggunakan metode eksperimen dengan rancangan acak lengkap (RAL) terdiri dari 4 perlakuan dan 5 kali ulangan. Adapun perlakuan tersebut yaitu perlakuan A (0 mL), B (1,5 mL), C (2,5 mL) dan D (3,5 mL) dengan lama perendaman 6 jam. Data yang didapatkan selama penelitian yaitu laju pertumbuhan spesifik (SGR) dan kualitas air. Data dianalis dengan Anova dan dilakukan uji lanjut Duncan. Hasil penelitian menunjukkan perendaman pupuk organik cair dengan dosis yang berbeda berpengaruh sangat nyata terhadap laju pertumbuhan spesifik C. lentillifera. Perlakuan D (perendaman dosis 3,5 mL) memberikan hasil terbaik dari semua perlakuan dengan laju pertumbuhan spesifik sebesar 3.29±0.06%/hari. Ministry of Maritime Affairs and Fisheries (KKP) targets 10,3 million tons seaweed production in 2015. One of potential seaweed to be developed is Caulerpa lentillifera. This type of seaweed is preferred by many people in Indonesia and the world because it has high economic value as fresh produce and for medicine. However, production is still insufficient because it is seasonal variety and its production still depends on natural harvest. Therefore, it is needed to increase C. lentillifera production by cultivation. One factor that affects C. lentillifera growth in the cultivation is the availability of nutrient. Therefore, a study on difficult dosage of liquid fertilizer throught immertion method is needed. The aim of this research was to determine the effect of different dosage of liquid fertilizer on the growth of C. lentillifera and to find out the proper dosage which can produce the best growth of C. lentillifera. This study was done experimentally with Completely Randomised Design. There were 4 treatments: A (0 mL), B (1,5 mL), C (2,5 mL) and D (3,5 mL) with time of immersion of 6 hours. Each treatment was replicated 5 times. The data collected were specific growth rate (SGR) and water quality parameter. Data was analyzed using collected were Anova and followed by Duncan's test. The result shows that different dosage of liquid organic fertilizer showed highly significantly effected the specific growth rate (SGR). Treatment D (dose of 3,5 mL) gives the best result compared with another treatments, with specific growth rate of 3.29±0.06%/day

Pengaruh Strategi Pembelajaran Problem Based Learning (Pbl) dan Group Investigation (Gi) terhadap Sikap Ilmiah di Man Kabanjahe

Penelitian ini bertujuan untuk mengetahui pengaruh strategi pembelajaran terhadap Sikap ilmiah. Metode penelitian menggunakan kuasi eksperimen dengan sampel penelitian sebanyak 3 kelas ditentukan secara acak dengan teknik cluster random sampling. Kelas A dibelajarkan dengan strategi pembelajaran Problem Based Learning, kelas B dengan strategi pembelajaran Group Investigation dan kelas C (Kontrol) menggunakan strategi pembelajaran Konvensional. Instrumen penelitian menggunakan tes Sikap ilmiah dalam bentuk uraian lembar observasi. Teknik analisis data dengan Analisis Covariat (ANACOVA) pada taraf signifikan α = 0,05 dengan bantuan SPSS 24. Hasil penelitian menunjukkan ada pengaruh signifikan strategi pembelajaran terhadap Sikap ilmiah (F = 3,673; P = 0,029). Sebagai tindak lanjut dari hasil penelitian ini diharapkan kepada guru untuk dapat menerapkan strategi Problem Based Learning (PBL) pada materi Ekologi dalam upaya meningkatkan Sikap ilmiah

Proses Kolaboratif dalam Perencanaan Berbasis Komunikasi pada Masyarakat Non-Kolaboratif

The collaborative process is a key element of the communicative-based planning. This process requires participations, equality of power, as well as adequate competence of the actors who engage the process. This condition seems difficult to occur in the societies, especially those in developing countries, in which people's participation, equality of power, and competence are considered low (uncollaborative society). The purpose of this paper is to explore whether the collaborative process can occur or not in the context of such societies. The empirical investigation was conducted by using the qualitative research methods with a case study approach to sidewalk vendors arrangement planning at Banjarsari, Surakarta City. It shows that the planning involves the collaborative process stages and authentic dialogue, which are the key aspects of collaborative process

Unidirectional heterologous receptor desensitization between both the fMLP and C5a receptor and the IL‐8 receptor

During inflammation neutrophils receive multiple signals that are integrated, allowing a single modified response. One mechanism for this discrimination is receptor desensitization, a process whereby ligand‐receptor binding is disassociated from cell activation. We examined the effect of heterologous receptor desensitization on neutrophil Chemotaxis, calcium mobilization, and arachidonic acid production, using interleukin‐8 (IL‐8), C5a, and N‐formyl‐methionyl‐leucyl‐phenylalanine (fMLP). We observed reciprocal inhibition with respect to Chemotaxis. We demonstrated that homologous desensitization, with respect to the mobilization of intracellular calcium stores, lasted approximately 15 min. Heterologous desensitization between the fMLP receptor and the C5a receptor was reciprocal; either stimulant would diminish the cells9 response to stimulation by the other for approximately 3–5 min. However, we observed a unidirectional heterologous desensitization of the IL‐8 receptor by both the fMLP and the C5a receptor. This unidirectional heterologous desensitization was observed with respect to both calcium mobilization and arachidonic acid production (i.e., prestimulation of the IL‐8 receptor had no effect on subsequent stimulation by either fMLP or C5a).Peer Reviewedhttps://deepblue.lib.umich.edu/bitstream/2027.42/141009/1/jlb0088.pd

Sry delivery to the adrenal medulla increases blood pressure and adrenal medullary tyrosine hydroxylase of normotensive WKY rats

BACKGROUND: Our laboratory has shown that a locus on the SHR Y chromosome increases blood pressure (BP) in the SHR rat and in WKY rats that had the SHR Y chromosome locus crossed into their genome (SHR/y rat). A potential candidate for this Y chromosome hypertension locus is Sry, a gene that encodes a transcription factor that is responsible for testes development and the Sry protein may affect other target genes. METHODS: The following study examined if exogenous Sry would elevate adrenal Th, adrenal catecholamines, plasma catecholamines and blood pressure. We delivered 10 μg of either the expression construct, Sry1/pcDNA 3.1, or control vector into the adrenal medulla of WKY rats by electroporation. Blood pressure was measured by the tail cuff technique and Th and catecholamines by HPLC with electrochemical detection. RESULTS: In the animals receiving Sry there were significant increases after 3 weeks in resting plasma NE (57%) and adrenal Th content (49%) compared to vector controls. BP was 30 mmHg higher in Sry injected animals (160 mmHg, p < .05) compared to vector controls (130 mmHg) after 2–3 weeks. Histological analysis showed that the electroporation procedure did not produce morphological damage. CONCLUSION: These results provide continued support that Sry is a candidate gene for hypertension. Also, these results are consistent with a role for Sry in increasing BP by directly or indirectly activating sympathetic nervous system activity