 |
 |
 |
 |
 |
 |
||
 |
 |
 |
 |
 |
| 9 | 1/1 | 返回列表 |
| 查看: 4330 | 回復: 8 | |||
zgh20086835木蟲 (職業(yè)作家)
小木蟲高級伴讀書童
|
[交流]
【求助】新鮮竹子的含水率是多少（最好是慈竹的） 已有4人參與
|
說的要有根據哈，關系到小蟲的”生死“哦 [ Last edited by zgh20086835 on 2010-4-20 at 11:22 ] |
回復此樓» 猜你喜歡
英一數(shù)一408，總分284，二戰(zhàn)真誠求調劑
已經有5人回復
-
083000環(huán)境科學與工程調劑，總分281
已經有4人回復
-
求調劑
已經有3人回復
-
食品工程專碩一志愿中海洋309求調劑
已經有10人回復
-
085600材料與化工調劑
已經有14人回復
-
一志愿北化085600材料專碩275|有文章專利｜求調劑
已經有10人回復
-
材料科學與工程求調劑
已經有9人回復
-
一志愿 南京航空航天大學 ，080500材料科學與工程學碩
已經有3人回復
-
材料科學與工程調劑
已經有10人回復
-
274求調劑
已經有4人回復
» 本主題相關價值貼推薦，對您同樣有幫助:
- 關于蒸壓加氣混凝土砌塊的抗壓強度含水率問題
已經有17人回復
- 石膏測其含水率（塊狀or粉狀）用的測試方法有什么不同？
已經有5人回復
- 常用熱塑性塑料加工時，含水率要求是多少，例如PP，PA6，PBT，PET等
已經有10人回復
- 污泥含水率疑惑
已經有8人回復
- 請問巖土含水率的表達符號是小w還是ω？
已經有9人回復
- 【求助】體積含水率與質量含水率換算問題
已經有18人回復
- 【求助】怎樣降低高分子膜的含水率
已經有7人回復
- 【求助】底泥的含水率的問題~~急
已經有4人回復
- 【分享】竹子高效制造生物乙醇的新技術
已經有4人回復
- 【求助】竹子的化學成分及結構
已經有16人回復
- 農桿菌轉化水稻，竹子等單子葉植物的PROTOC0L
已經有8人回復
zgh20086835
木蟲 (職業(yè)作家)
小木蟲高級伴讀書童
- 應助: 9 (幼兒園)
- 金幣: 3116.5
- 散金: 502
- 紅花: 22
- 沙發(fā): 1
- 帖子: 4161
- 在線: 266.9小時
- 蟲號: 672239
- 注冊: 2008-12-11
- 性別: GG
- 專業(yè): 環(huán)境工程
2樓2010-04-20 12:25:17
seamuse
木蟲 (著名寫手)
- 應助: 12 (小學生)
- 貴賓: 0.039
- 金幣: 4273.5
- 散金: 53
- 紅花: 6
- 帖子: 1355
- 在線: 294.2小時
- 蟲號: 587156
- 注冊: 2008-08-15
- 專業(yè): 基因表達調控與表觀遺傳學
3樓2010-04-20 16:20:35
xiaowuhehe
鐵桿木蟲 (著名寫手)
- 應助: 3 (幼兒園)
- 貴賓: 0.128
- 金幣: 14858.3
- 散金: 3050
- 紅花: 15
- 帖子: 2625
- 在線: 171.1小時
- 蟲號: 311515
- 注冊: 2006-12-30
- 性別: GG
- 專業(yè): 植物資源學
4樓2010-04-20 17:17:57
zgh20086835
木蟲 (職業(yè)作家)
小木蟲高級伴讀書童
- 應助: 9 (幼兒園)
- 金幣: 3116.5
- 散金: 502
- 紅花: 22
- 沙發(fā): 1
- 帖子: 4161
- 在線: 266.9小時
- 蟲號: 672239
- 注冊: 2008-12-11
- 性別: GG
- 專業(yè): 環(huán)境工程
5樓2010-04-21 00:11:59
seamuse
木蟲 (著名寫手)
- 應助: 12 (小學生)
- 貴賓: 0.039
- 金幣: 4273.5
- 散金: 53
- 紅花: 6
- 帖子: 1355
- 在線: 294.2小時
- 蟲號: 587156
- 注冊: 2008-08-15
- 專業(yè): 基因表達調控與表觀遺傳學
6樓2010-04-21 14:17:00
zwdbordeaux
木蟲 (正式寫手)
- 應助: 0 (幼兒園)
- 貴賓: 0.086
- 金幣: 1718.4
- 紅花: 4
- 帖子: 770
- 在線: 52.6小時
- 蟲號: 493623
- 注冊: 2008-01-10
- 專業(yè): 植物生理與生化
7樓2010-04-25 04:13:52
zgh20086835
木蟲 (職業(yè)作家)
小木蟲高級伴讀書童
- 應助: 9 (幼兒園)
- 金幣: 3116.5
- 散金: 502
- 紅花: 22
- 沙發(fā): 1
- 帖子: 4161
- 在線: 266.9小時
- 蟲號: 672239
- 注冊: 2008-12-11
- 性別: GG
- 專業(yè): 環(huán)境工程
8樓2010-04-25 12:53:01
zwdbordeaux
木蟲 (正式寫手)
- 應助: 0 (幼兒園)
- 貴賓: 0.086
- 金幣: 1718.4
- 紅花: 4
- 帖子: 770
- 在線: 52.6小時
- 蟲號: 493623
- 注冊: 2008-01-10
- 專業(yè): 植物生理與生化
zgh20086835(金幣+1):謝謝啊O(∩_∩)O~ 2010-05-01 19:05
|
呵呵，好吧。我?guī)湍闼阉鞯搅艘恍⿺?shù)據，但是你可以看到，它們的含水量是隨著生長年齡，而有所變化的。記住，千萬要看一下這個原文，用的時候要寫上原文的引用！ 請看這個連接，table1  Variation of Moisture Content and Specific Gravity of Gigantochloa scortechinii Gamble along the Internodes Sixth Height Abstract The variation of initial moisture content and specific gravity in Gigantochloa scortechinii along the internodes sixth height were investigated. The culms were taken from the natural stand. This study found that the initial moisture content was decreased with the culms age and along the internodes sixth height. Nevertheless, the specific gravity gave an opposite result. -------------------------------------------------------------------------------- Introduction The initial moisture content and specific gravity of bamboo have a significant role in setting the processing line and equipments of the specific bamboo products and production. The moisture content for example, would influence the dimension stability and further degraded the strength, stiffness, processing and durability (Brown et al., 1952; Panshin & de zeeuw, 1970; Grewal, 1978). Mean while, specific gravity is a total woody material per volume and always linked to the physical and mechanical properties. Both factors were among the indicator in ruling the product segmentation of bamboo from specific culms age. Consequently, there are many research have been conducted on both moisture content and specific gravity intensively, and the information gathered is well established. However, the investigation on the scenario of both factors along the internodes height itself is still lacking. Hopefully, this study would lead a better understanding and knowledge in utilizing and processing of bamboo products with special reference to the whole internodes uses. Materials and methods Sources of materials Gigantochloa scortechinii with five different age classes namely 0.5, 1.5, 3.5, 5.5, and 6.5 years old from natural stand Nami, Kedah (northern part of Peninsular Malaysia) were selected. Age of the culms was marking starting the first day of their shooting period. Those culms were taken within the same clump. Each culm from internodes sixth were cut and immediately coated with solvent based paint and kept inside the ice box before being transferred to the laboratory. Preparation of the specimens Each culms from internodes sixth were cut into 3 cm long from bottom part (numbering as ring no.1) up to top of the internodes sixth height (numbering as ring no.2, 3, 4.....n) using a hand saw. The rings were then cut in diameter of 1 cm width with a chisel to get a final size of the specimen 3 cm length X 1 cm width X culm wall thickness. Determination initial weight of the specimens The initial weight of the specimens was determined with measuring device into two decimal places. All the unnecessary fibre and dust were removed before the reading were taken. This process was taken immediately to avoid air dried of the specimens. Determination volume of the specimens The volume of the specimens was measured by a weight displacement method. The process was done by soaking the specimens into distilled water without touching the glass. The specimens were maintained in distilled water until all air bubble come out and the final reading was taken. Determination of oven dried weight of the specimens The specimens were oven dried at the temperature of 103±2 O C for 24 hours. Inside the oven, the specimens were arranged with distance 1 cm each others to allow even heat flow. Initial moisture content and specific gravity The Initial moisture content and specific gravity were calculated using the following formula: Initial moisture content (%) = [(WI - WO)/WO] X 100 Specific gravity = WO/Vg Where, WI - Initial weight (g) WO - Oven dried weight (g) Vg - Volume of the specimens (cm 3 ) Results and discussions Variation of initial moisture content along the internodes sixth height Regardless of age and internodes height, the initial moisture content and specific gravity varied from 48.6 % to 90.5 % and 0.53 to 0.68 respectively (Table 1). The initial moisture content found in this study differed significantly (P<0.01) with age, internodes height, and the interaction between age and internodes height (Table 2). These results however were differed from those of G. scortechinii reported by Abd. Latif & Mohd. Zin (1992) taken from the Forest Research Institute Malaysia (FRIM) trial plot. Generally, Table 1 shows that the highest value of initial moisture content were observed in the 0.5 years old culms (90.5 %) while the lowest in 6.5 years old culms (48.6 %). The mean values also show significant decreased by age (r= -0.13). Abd. Latif & Mohd. Zin (1992) on their studies reported that the initial moisture content of bamboo culms were about 87.9 % (one year), 77.6 % (two years), and 69.1 % (three years) respectively. The swing pattern of the moisture content with age could be happened due to thickening process of fibre and parenchyma cells wall as young culms enter to the maturation stage. The variation that exist between both locations could probably best explained by the different harvesting time and climatic factors (Nami in northern region and FRIM in central region) as moisture content of the bamboo were tendency higher in rainy compared to dried season (Abd. Latif & Liese 1998). Within the internodes sixth height, the initial moisture content were found to be significantly decreased from bottom to the top portion of the internodes height (r= -0.13). This trend probably be due to the maturation process of the cells occurred along the internodes from top towards bottom portion (Itoh 1975, Itoh & Shimaji 1981, Itoh 1990). As this happened, the fiber and parenchyma cells wall most likely to be thicker along the internodes height itself. From Figure 1, the initial moisture content along the internodes sixth height of culms aged 0.5 years old ranged between 70.2-121.3 %, 50.3-80.5 % from the 1.5 years old, 42.3-77.3 % from the 3.5 years old, 36.2-52.3 % from the 5.5 years old, and 36.4-68.5 % from the 6.5 years old culms respectively (Figure 2). The highest value was observed in the 0.5 years old culms (51.1 %) and the lowest in the 6.5 years old culm (16 %). http://www.fao.org/DOCREP/ARTICLE/WFC/XII/0030-B4.HTM [ Last edited by zwdbordeaux on 2010-5-1 at 17:38 ] |
9樓2010-05-01 17:35:59
相關版塊跳轉
我要訂閱樓主 zgh20086835 的主題更新
| 9 | 1/1 | 返回列表 |
| 最具人氣熱帖推薦 [查看全部] | 作者 | 回/看 | 最后發(fā)表 | |
|---|---|---|---|---|
|
[考研] 266分，求材料相關專業(yè)調劑 +6 | 哇呼哼呼哼 2026-03-30 | 8/400 |
|
|---|---|---|---|---|
|
|
[考研] 生物考研337分求調劑 +3 | cgxin 2026-03-30 | 4/200 |
|
|
|
[考研] 一志愿鄭大材料工程290求調劑 +11 | Youth_ 2026-03-30 | 11/550 |
|
|
[考研] 材料學碩333求調劑 +14 | 北道巷 2026-03-24 | 14/700 |
|
|
|
[考研] 322求調劑：一志愿湖南大學 材料與化工（085600），已過六級。 +9 | XX小鄧 2026-03-29 | 9/450 |
|
|
|
[考研] 310求調劑 +10 | 爭取九點睡 2026-03-30 | 10/500 |
|
|
|
[考研] 071010 323 分求調劑 +3 | Baekzhy 2026-03-27 | 3/150 |
|
|
|
[考研] 壓國家一區(qū)線，求導師收留，有恩必謝！ +7 | 迷人的哈哈 2026-03-28 | 7/350 |
|
|
|
[考研] 復試調劑 +3 | raojunqi0129 2026-03-28 | 3/150 |
|
|
|
[考研] 085701環(huán)境工程，267求調劑 +16 | minht 2026-03-26 | 16/800 |
|
|
|
[考研] 275求調劑 +10 | jjjjjjjjjjl 2026-03-27 | 10/500 |
|
|
|
[考研] 266求調劑 +11 | 陽陽哇塞 2026-03-27 | 12/600 |
|
|
|
[考研] 化學調劑 +4 | 愛吃番茄的旭 2026-03-24 | 5/250 |
|
|
|
[考研] 279 分 求調劑 +4 | 睡個好覺_16 2026-03-24 | 4/200 |
|
|
|
[考研] 考研調劑 +10 | 呼呼？~+123456 2026-03-24 | 10/500 |
|
|
|
[考研] 考研調劑 +9 | 小蠟新筆 2026-03-26 | 9/450 |
|
|
|
[考研] 347求調劑 +4 | L when 2026-03-25 | 4/200 |
|
|
|
[考研] 0854人工智能方向招收調劑 +4 | 章小魚567 2026-03-24 | 4/200 |
|
|
|
[考研]
 材料考研調劑生
+3
|
黃粱一夢千年 2026-03-24 | 3/150 |
|
|
|
[考研] 材料專碩331求調劑 +4 | 鮮當牛 2026-03-24 | 4/200 |
|