Judul: Morfologi Kelenjar Lingualis Walet Linchi (Collocalia linchi) pada Masa Berbiak dan Bersarang
Abstrak: This research was aimed to describe the lingual gland morphology of the cave swiftlets (C. linchi) during reproduction and nesting period. Thirty six cave swiftlets were used in this research. The result showed that the lingual gland consist of anterior and posterior glands. Histologically, the anterior lingual gland was a simple mucous tubular gland and the posterior lingual gland was a complex (branched) mucous tubular gland. The lumen during reproduction period was smaller than the lumen during nesting period. Using AB pH 2.5 and PAS staining method, the lingual gland was detected containing of acid and neutral carbohydrate in the acinar of the anterior and posterior lingual glands. The intensity of the stain during the reproduction period was weaker than the nesting period.
Keyword: reproduction and nesting period, lingual gland, C. linchi

Judul: Morphofunction changes of gonadal and mandibular glands of the cave swiflets (Collocalia linchi) during nesting and reproductive period
Abstrak: The present study aimed to study the morphological and histochemical changes and possible correlation between the gonads and mandibular glands of the cave swiflets (Collocalia linchi) during reproductive and nesting period. A total of seventy two adult birds were used in this study. The birds, three males and three females, were collected each month during a period of one year. After being sacrificed, samples of gonads and mandibular salivary glands were taken out and processed routinely for light microscopy. The present result showed that the gonads were active during the period of February - June. In the testis, the size of the testicle were similar throughout the year, but the testis had different color according to month. The testis in June - January were black in color, and were white and black in February, March, May and were all white in April. The size and structure of the ovaries were also increase towards February - May. Therefore the period of February - June was regarded as reproductive period of the cave swiftlet. The size and structure of mandibular glands were also clearly increased and the glands were more active during the nesting and reproductive period. Histochemically, the bindings of some lectins in the gonad and mandibular glands were also increase in the number of reactive cells and in the intensities of the positive reactions during the nesting and reproductive period, suggested that certain carbohydrates were involved and may play important roles in the reproductive function of the cave swiftlet. The present result showed that there were clear signs on the functional and structural changes of the gonads and mandibular glands of the cave swiftlets during the active nesting and reproductive period, suggested a possible regulatory mechanism of the mandibular gland through gonadal hormones pathway.
Keyword: 

Judul: Estimasi nilai pajak emisi kendaraan umum berbahan bakar bensin di Jakarta
Abstrak: Provinsi DKI Jakarta merupakan provinsi dengan tingkat polusi udara tertinggi di Indonesia. Transportasi merupakan penyumbang utama polusi udara di DKI Jakarta, yaitu sebesar 70%. Sumbangan sektor transportasi ini terutama berasal dari kendaraan berbahan bakar bensin, salah satunya adalah kendaraan umum. Pencemaran tersebut menimbulkan kerugian masyarakat, diantaranya kerugian dari segi kesehatan. Guna mengatasi permasalahan yang terjadi, salah satu upaya yang dapat dilakukan pemerintah ialah dengan menetapkan pajak emisi kendaraan berdasarkan tingkat kerugian kesehatan masyarakat. Mengacu pada hal tersebut, dilakukan sebuah estimasi kerugian masyarakat akibat emisi kendaraan umum berbahan bakar bensin berdasarkan biaya kesehatan yang totalnya mencapai Rp 4.053.041.102.763,- per tahun. Dari biaya kesehatan tersebut selanjutnya dapat dihitung perkiraan tarif pajak emisi untuk kendaraan umum yang terdiri dari kendaraan angkot sebesar Rp 3.769.733,- per kendaraan per tahun dan taksi sebesar Rp 3.770.528,- per kendaraan per tahun. Mayoritas responden masyarakat DKI Jakarta menyatakan sangat setuju bahwasanya peningkatan jumlah kendaraan umum dapat memperparah kondisi udara yang tercemar. Hal ini juga diperkuat dengan pernyataan keyperson yang menyatakan bahwa adanya pencemaran udara di Jakarta tersebut memberikan dampak negatif bagi kesehatan. Oleh karena itu, baik masyarakat maupun keyperson menyatakan setuju jika pajak emisi dijadikan solusi dalam mengurangi pencemaran udara.
Keyword: Air pollution, cost of illness, emission tax rates, gasoline, public transportation emissions