A story of the whole year at THH

I’m sorry for the straight forward me, I know that this would be considered as ‘curhat’, but whatever…
The 5th semester of us, year of 2010, had ended. There were so many things had happened and I would like to share it, in my point of view. Well, it maybe not only on the 5th semester but I may also shared how the 4th semester went, a little.

  1. This semester, I spent the daily routine in campus with you, I considered you all as my friend and family, Forest Product Technology year of 2010. At the beginning, I felt weird to have a small class every day at the Forest Product Technology subjects. But I found it very convenient to study in a small class rather than in a big class. I would get to know you all better, the teachers better, and we could get to work in group better. That’s my point of view.
  2. This semester, I was really glad to get to know to the seniors and juniors, especially seniors from Forest Product Technology major, and juniors who are interested in Forest Product Technology. The seniors, they are full of great people, hardworking, unique, funny, interesting, and I’m glad to consider them as big brothers or big sisters in a family. The juniors, I’m looking forward to you to join our big family. We were having a great time to get to know you within our activity, and we apologized if there were many inconvenience as we spent the time together. Well, that’s what we are…
  3. This semester, I got to know the teachers of Forest Product Technology major. They are great and there were many habits of them that were really funny and that made us to be kept in our mind. Mr. Joko’s humorous lecture, Mr. Tjipto’s code handwriting, Mr. Prayit’s speaking lecture, Mr. Gentur’s motivation lecture, and many more. Thank you for all the lessons given in this semester and maybe more ahead.
  4. This semester, aside from the academic and lecture routine, I spent the time with the Family of Forest Product Technology, or you can say Forestech. Well, it just like the usual what an organization activities mostly do, that were meetings, deadlines, letters, and meetings again, but I found that it was somehow refreshing.Forestech @Bali

I learned many more things aside from academics, and that was really worth my time in college life. There were also times I got bored with those activities, really exhausted somehow, but I realized that it was actually the dynamic system of how the organization works. I give my best regards to my friends, my partners, my family, who helped me got through those hard times and gave me some good memories and experiences of this kind of thing. Those experiences are really valuable.
Well, that was my story of the whole year I spent when I got into this major, Forest Product Technology. I got to know many great people, many great friends, and also I found a big family in it. I hope it’s not gonna end…
(Hanifah, THH 2010)

Perkembangan Sel Kayu

Proses perkembangan sel kayu dimulai dari pembentukan sel kayu oleh kambium. Menurut Praptoyo (2009),  tahapan-tahapan perkembangan sel kayu adalah sebagai berikut:

a. Kambium vasikuler sebagai induk yang menghasilkan kayu

b. Fase pertumbuhan sel

c. Fase Penebalan dinding sel

d. Fase Lignifikasi

Kambium Vasikuler terdiri dari dua macam sel yaitu sel inisial kambium bentuk kumparan dan sel inisial kambium jari-jari.

Sel­sel kambium vaskuler melakukan pembelahan ke arah dalam membentuk jaringan xilem sekunder dan ke arah luar membentuk jaringan foem sekunder. Pembelahan sel­sel kambium vaskuler menghasilkan pertambahan diameter batang (Gambar 1).

Image

Perkembangan panjang pada beberapa sel terjadi bersamaan dengan pertambahan diameter. Ini terjadi pada kayu jarum maupun kayu daun.

Dinding sekunder terbentuk setelah sel mencapai maksimum dan sebelah dalam dinding primer dinding yang kaku. Lignifikasi merupakan pengendapan lignin, pertama-tama terjadi pada sudut-sudut sel, kemudian meluas ke lamela tengah dan dinding sekunder. dn