Judul: Studi Komparatif Saluran Pencernaan Parkit (Melopsittacus undulatus) dengan tinjauan Khusus terhadap Fungsi Tembolok (Telaah Pustaka)
Abstrak: The structure of the digestive tract of Budgerigar (Melopsittacus undulatus) is generally the same as the digestive tract of the other avian, which is cranially start by a pair of beaks down to ventrocaudal and ends by the cloaca. The characteristics of the digestive tract of Budgerigar are in form of its beaks, tongue, crop, stomach, and intestine, which are adapted with the type of food intake. Crop (ingluvies) is an expansible ventral wall of oesophagus with its function as storage and softening chamber. Budgerigar's crop also has the function for softening and regurgitating pellets or food for their young.
Keyword: 

Judul: Morfologi Esofagus dan Lambung Burung Serak Jawa (Tyto alba)
Abstrak: This study was aimed to describe the morphology of esophagus and stomach of barn owl (Tyto alba). Two barn owl (T. alba) were used to observed macroscopic and microscopically. The macroscopic observation was done by observing the shape and size of the esophagus and stomach. The microscopic observation was done using standard histological method with hematoksilin eosin (HE) staining. The results showed that the esophagus consist of pars cervicalis and pars thoracalis, was 9.8 centimeters in length, and possessed no crop. Mucosa of the esophagus pars cervicalis was lined with nonkeratinized stratified squamous epithelial cell, and the pars thoracalis lined by simple columnar epithelial cell. The esophageal gland was mucous type distributed in a lot number along the mucosa. The external muscle consists of two layers, which were the inner longitudinal muscle and outer circular muscle. The stomach could be distinguished into proventriculus and ventriculus (gizzard). Proventriculus was a cone shape and gizzard was cuboid with an average length of the greater curvature was 6.5 cm and was 1.88 cm in diameter. The mucosa of proventriculus was lined by simple columnar epithelium. The proventricular gland was consist of superficial and profundal glands. The superficial gland produced mucous, while the profundal produced pepsinogen and hydrochloric acid (HCl). The external muscle layer consist of three layers, two longitudinal muscles in the superficial and profundal layers and circular muscle in the middle between the two of longitudinal muscles. The mucosa of gizzard was lined with simple columnar epithelial cell, with the thin cuticle. The gizzard glands consist of simple tubular gland that produced mucous. The gizzard has two very thick muscle layers composed by inner longitudinal muscle and the outer circular muscle. The characteristic morphology of the esophagus and stomach of barn owl (T. alba), was presumed to supports their behavior, which swallow a whole body of their prey.
Keyword: Bogor Agricultural University (IPB), Tyto alba, proventriculus, esophagus, gizzard

Judul: Pengaruh ACFTA (ASEAN-China Free Trade Area) Terhadap Impor Telepon Asal China di ASEAN
Abstrak: ASEAN-China Free Trade Area (ACFTA) adalah kesepakatan dengan negara-negara di ASEAN dengan China dalam mewujudkan Kawasan perdagangan bebas. Telepon merupakan komoditas unggulan China yang termasuk kategori impor terbesar di ASEAN dimana nilai impor telepon China lebih besar dibandingkan dengan negara-negara lain, China mendominasi impor telepon di ASEAN sebanyak 55 dari keseluruhan impor dengan negara-negara lainnya. Penelitian bertujuan untuk menganalisis adanya pengaruh ASEAN-China Free Trade Area (ACFTA) terhadap impor telepon negara-negara ASEAN dari China. Penelitian ini menggunakan data tahunan pada periode 2006 sampai 2020. Metode yang digunakan pada penelitian ini yaitu analisis deskriptif dan gravity model. Secara kuantitatif menunjukkan bahwa produksi telepon disetiap negara ASEAN belum dapat memenuhi kebutuhan terhadap telepon sehingga dilakukan impor. Hasil estimasi gravity model menunjukkan bahwa variabel ACFTA tidak berpengaruh signifikan terhadap impor telepon China di ASEAN. Faktor lain yang mempengaruhi impor telepon China di ASEAN ialah GDP riil ASEAN, GDP rill China, nilai tukar riil, jarak dan inflasi berpengaruh terhadap impor telepon China di ASEAN., ASEAN-China Free Trade Area (ACFTA) is an agreement between ASEAN countries and China for realizing a free trade area. Telephone is China's leading commodity which is included in the largest import category in ASEAN where the value of China's telephone imports is greater than other countries, China dominates telephone imports in ASEAN as much as 55 percent of the total imports from other countries. This study aimed to analyzed the effect of the ASEAN-China Free Trade Area (ACFTA) agreement on telephone imports from ASEAN countries from China. This study used an annual data from 2006 to 2020.The analytical methods used in this study are descriptive analysis and gravity model. Quantitatively , it shows that telephone production in each ASEAN country has not been able to meet the demand for telephones, imports are carried out. The estimation results of the gravity model show the ACFTA variable no significant effect on China's telephone imports in ASEAN. Other factors affecting China's telephone importsin ASEAN are ASEAN's real GDP, China's real GDP, the real exchange rate, distance and inflation have effect on China's telephone imports in ASEAN.
Keyword: ACFTA, telephone, gravity model, imports