The relationship of conductivity to the morphology and crystallinity of polyaniline controlled by water content via reverse microemulsion

2006 ◽  
Vol 285 (4) ◽  
pp. 405-411 ◽  
Author(s):  
Qiong Zhou ◽  
Jiewei Wang ◽  
Yuliang Ma ◽  
Chuanbo Cong ◽  
Fang Wang
Keyword(s):  
Water Content ◽  
Reverse Microemulsion ◽  
Relationship Of ◽  
The Relationship

Carbon balance in relation to drying in four epiphytic mosses growing in different vertical ranges

1979 ◽  
Vol 57 (19) ◽  
pp. 1994-1998 ◽  
Author(s):  
Peter L. Tobiessen ◽  
Nancy G. Slack ◽  
Keith A. Mott
Keyword(s):  
Water Potential ◽  
Water Content ◽  
Carbon Balance ◽  
The Other ◽  
Moss Species ◽  
Relationship Of ◽  
The Relationship ◽  
Neckera Pennata ◽  
Lower Water Content ◽  
Photosynthesis And Respiration

The response of photosynthesis and respiration to drying was measured in four species of epiphytic mosses, Ulota crispa (Hedw.) Brid., Neckera pennata Hedw., Anomodon rugellii (C. Mull.) Keissl., and Plagiomnium cuspidatum (Hedw.) T. Kop., from habitats along a desiccation gradient. There was little difference among the mosses in these responses. The relationship of water content to water potential did differ among the mosses, with Plagiomnium, the facultative epiphyte, showing a typical response of more mesic species and the other three showing a more xeric response, i.e., water potential does not begin to fall steeply until a lower water content is reached in Ulota, Neckera, and Anomodon. Both photosynthesis and respiration in all four moss species were quite sensitive to moderate water stress.

Analysis of the Influence of Water Content on Shanxi Loess CBR and Rebound Module

2014 ◽  
Vol 919-921 ◽  
pp. 820-823
Author(s):  
Xi Rong Wu ◽  
Li Li Zhu
Keyword(s):  
Moisture Content ◽  
Water Content ◽  
Resilient Modulus ◽  
Test Methods ◽  
Shanxi Province ◽  
Influence Of Water ◽  
The Times ◽  
Relationship Of ◽  
The Impact ◽  
The Relationship

Selection of five typical loess in Shanxi Province, the paper adopt the indoor test methods to prepares the different compaction and different moisture content specimens which were used to test CBR value and rebound module, analyzes the impact of compactness and moisture content on the CBR value and resilient modulus and establishes the relationship of CBR and moisture content. The result shows that the level of moisture content has great impact on CBR value and rebound module. The CBR value is maximal under optimum moisture content and maximum degree of compaction condition. The times of compaction have little effect on the improvement of CBR with increasing water content. The relationship of the soaking CBR,resilient modulus and the moisture content shows a certain regularity.Key words: Loess filler;the CBR;resilient modulus;compactness;moisture content;relationship

Shear Strength Change of Different Water Content after Thawing Remolded Soil

2012 ◽  
Vol 204-208 ◽  
pp. 334-337
Author(s):  
Wei Jiang ◽  
Bing Xin Gu
Keyword(s):  
Shear Strength ◽  
Water Content ◽  
Room Temperature ◽  
Triaxial Compression ◽  
Shear Strength Parameters ◽  
Strength Change ◽  
Soil Shear Strength ◽  
Set Up ◽  
Relationship Of ◽  
The Relationship

Freeze-thaw made the microstructure of the soil produce a certain degree of damage, which was relevant with the soil water content. 6 kinds of remolded soil of the water content was prepared, at low temperature of freezed, in room temperature of melt, after not consolidated non-drained triaxial compression test, the soil shear strength parameters was determined. The results show: after thawed, soil shear strength had reduced significantly, and water content exerted such a pronounced effect on strength of reducing amplitude. Accordingly, the relationship of shear strength reducing after thawing of remolded soil and the water content was set up preliminarily.

scholarly journals Respon nilai kekerasan, kadar air dan total padatan terlarut buah jambu kristal pada berbagai jenis kemasan dan masa simpan

Jurnal Agro ◽  
10.15575/4142 ◽  
2019 ◽  
Vol 6 (1) ◽  
pp. 49-56
Author(s):  
Kusumiyati Kusumiyati ◽  
Ine Elisa Putri ◽  
Yuda Hadiwijaya ◽  
Syariful Mubarok
Keyword(s):  
Water Content ◽  
Soluble Solids ◽  
Guava Fruit ◽  
Randomized Design ◽  
Postharvest Handling ◽  
Completely Randomized Design ◽  
Relationship Of ◽  
The Relationship ◽  
And Storage ◽  
Better Than

Penurunan kualitas selama penyimpanan merupakan permasalahan yang seringkali ditemui pada pascapanen buah jambu kristal. Oleh karena itu, diperlukan penanganan yang tepat. Penanganan pascapanen yang umum digunakan adalah dengan penggunaan kemasan. Tujuan penelitian ini adalah untuk mengkaji hubungan berbagai kemasan dan masa simpan terhadap nilai kekerasan, total padatan terlarut (TPT) dan kadar air buah jambu kristal. Penelitian ini menggunakan Rancangan Acak Lengkap (RAL) pola faktorial dengan 4 ulangan. Faktor pertama adalah pengemasan (tanpa kemasan (kontrol), plastik wrapping, koran) dan faktor kedua adalah masa simpan (0, 4 dan 8 hari). Data yang diperoleh kemudian diolah dengan analisis sidik ragam (ANOVA), selanjutnya diuji Duncan dengan taraf 5%. Hasil yang didapatkan menunjukkan tidak terjadi interaksi antara jenis kemasan dan masa simpan terhadap nilai kekerasan, TPT dan kadar air buah jambu kristal. Namun, jenis kemasan koran menampilkan nilai kekerasan buah jambu kristal yang lebih rendah daripada perlakuan tanpa kemasan (kontrol) dan plastik wrapping, sedangkan masa simpan 0 hari memperlihatkan nilai kekerasan buah jambu kristal yang lebih tinggi dibandingkan dengan masa simpan 4 dan 8 hari. Nilai kekerasan buah mengalami penurunan setelah 4 hari penyimpanan. Penggunaan kemasan berupa plastik wrapping dan koran tidak lebih baik dibandingkan dengan tanpa pengemasan (kontrol) terhadap nilai kekerasan pada buah jambu kristal.ABSTRACT Losses during storage is often encountered in postharvest of crystal guava fruit. Therefore, proper handling is needed. Packaging is the most commonly performed postharvest handling. The purpose of this study was to examine the relationship of various packagings and storage periods to the values of firmness, total soluble solids (TSS) and water content of crystal guava fruit. This study used factorial arrangement of completely randomized design (CRD) with four replications. The first factor was packagings (without packaging (control), wrap plastic and paper) and the second factor was storage periods (0, 4, and 8 days) in room temperature (±250C). The data obtained then processed using analysis of variance (ANOVA), then duncan test was carried out with a level of 5%. The results showed no interaction between the types of packaging and storage periods to the values of firmness, TSS and water content of crystal guava fruit. However, the paper packaging presented the firmness value which was lower than without packaging (control) and wrap plastic, whereas the 0 day storage showed the firmness value fruit which was higher than the 4 and 8 days storage. Value of fruit firmness decreased after 4 days of storage. The use of packaging in the form of wrap plastic and paper were not better than without packaging (control) to the firmness of the crystal guava fruit.

scholarly journals Effects of Breccia and Water Contents on the Mechanical Properties of Fault-core-zone Materials: an Experimental Investigation Using Artificial Specimens

2022 ◽  
Author(s):  
Hyun-Seok Yun ◽  
Seong-Woo Moon ◽  
Yong-Seok Seo
Keyword(s):  
Mechanical Properties ◽  
Water Content ◽  
Penetration Resistance ◽  
Specimen Preparation ◽  
Field Sampling ◽  
Core Zone ◽  
Relationship Of ◽  
The Relationship ◽  
Resistance Value ◽  
Water Contents

Abstract Determining the mechanical properties of fault-core-zone materials is challenging because of the low strength of such materials, which affects field sampling, specimen preparation, and laboratory testing. We overcame this problem by preparing and testing mechanical properties of 132 artificial fault-core-zone specimens consisting of mixtures of breccia, sand, clay, and water. The unconfined compressive strength (UCS), elastic modulus (E), and penetration resistance value (PRV) of these fault-core-zone materials were measured, and the effects of breccia content and water content on mechanical properties were assessed. Results show that UCS is inversely proportional to breccia content and water content, and that E is inversely proportional to water content. Furthermore, the inverse relationship of UCS with water content varies with breccia content. UCS is proportional to both PRV and E, and the relationship for each varies with breccia content. High coefficients of determination (R2 = 0.62–0.88) between the parameters suggest that breccia content, water content, and PRV are potentially useful parameters for estimating the mechanical properties of fault core zones.

The relationship of the scleractinian corals to the rugose corals

Paleobiology ◽  
1980 ◽  
Vol 6 (02) ◽  
pp. 146-160 ◽  
Author(s):  
William A. Oliver
Keyword(s):  
Critical Points ◽  
Scleractinian Corals ◽  
Convincing Evidence ◽  
Early Triassic ◽  
Rugose Corals ◽  
History Of ◽  
The Subject ◽  
Relationship Of ◽  
The Relationship ◽  
Biologic Factors

The Mesozoic-Cenozoic coral Order Scleractinia has been suggested to have originated or evolved (1) by direct descent from the Paleozoic Order Rugosa or (2) by the development of a skeleton in members of one of the anemone groups that probably have existed throughout Phanerozoic time. In spite of much work on the subject, advocates of the direct descent hypothesis have failed to find convincing evidence of this relationship. Critical points are:(1) Rugosan septal insertion is serial; Scleractinian insertion is cyclic; no intermediate stages have been demonstrated. Apparent intermediates are Scleractinia having bilateral cyclic insertion or teratological Rugosa.(2) There is convincing evidence that the skeletons of many Rugosa were calcitic and none are known to be or to have been aragonitic. In contrast, the skeletons of all living Scleractinia are aragonitic and there is evidence that fossil Scleractinia were aragonitic also. The mineralogic difference is almost certainly due to intrinsic biologic factors.(3) No early Triassic corals of either group are known. This fact is not compelling (by itself) but is important in connection with points 1 and 2, because, given direct descent, both changes took place during this only stage in the history of the two groups in which there are no known corals.

Skeletal elements of crinoid echinoderms: High-resolution structural and microanalytical results

1983 ◽  
Vol 41 ◽  
pp. 194-195
Author(s):  
D. F. Blake ◽  
L. F. Allard ◽  
D. R. Peacor
Keyword(s):  
High Resolution ◽  
Marine Invertebrates ◽  
Sea Urchins ◽  
Structural Features ◽  
Sea Stars ◽  
High Resolution Tem ◽  
Relationship Of ◽  
The Relationship ◽  
Insight Into

Echinodermata is a phylum of marine invertebrates which has been extant since Cambrian time (c.a. 500 m.y. before the present). Modern examples of echinoderms include sea urchins, sea stars, and sea lilies (crinoids). The endoskeletons of echinoderms are composed of plates or ossicles (Fig. 1) which are with few exceptions, porous, single crystals of high-magnesian calcite. Despite their single crystal nature, fracture surfaces do not exhibit the near-perfect {10.4} cleavage characteristic of inorganic calcite. This paradoxical mix of biogenic and inorganic features has prompted much recent work on echinoderm skeletal crystallography. Furthermore, fossil echinoderm hard parts comprise a volumetrically significant portion of some marine limestones sequences. The ultrastructural and microchemical characterization of modern skeletal material should lend insight into: 1). The nature of the biogenic processes involved, for example, the relationship of Mg heterogeneity to morphological and structural features in modern echinoderm material, and 2). The nature of the diagenetic changes undergone by their ancient, fossilized counterparts. In this study, high resolution TEM (HRTEM), high voltage TEM (HVTEM), and STEM microanalysis are used to characterize tha ultrastructural and microchemical composition of skeletal elements of the modern crinoid Neocrinus blakei.

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