Title
Year
Author
Map of places near Teluk Sebuku
Map of places near Teluk Sebuku
Collection | Published Works |
---|---|
Title |
Map of places near Teluk Sebuku |
Publication Date | 2001 |
Page | 1 |
Language | en||id |
Content Type | Map |
Object Type |
Image |
Terms of Use |
closedAccess |
Repository | LKCNHM |
Series | Series M62 |
Description |
Source of publication unknown |
Map of settlements near Sungei Sebuku and Sungei Seseyap
Map of settlements near Sungei Sebuku and Sungei Seseyap
Collection | Published Works |
---|---|
Title |
Map of settlements near Sungei Sebuku and Sungei Seseyap |
Page | 1 |
Language | English |
Content Type | Map |
Object Type |
Image |
Terms of Use |
closedAccess |
Repository | LKCNHM |
Series | Series M62 |
Map of Sungai Mahakam
Map of Sungai Mahakam
Collection | Published Works |
---|---|
Title |
Map of Sungai Mahakam |
Publication Date | 2001 |
Page | 1 |
Language | Indonesian |
Content Type | Map |
Object Type |
Image |
Terms of Use |
closedAccess |
Repository | LKCNHM |
Series | Series M62 |
Description |
Source of publication unknown |
Maps of limestone in Kalimantan
Maps of limestone in Kalimantan
Collection | Published Works |
---|---|
Title |
Maps of limestone in Kalimantan |
Publication Date | 2000 |
Page | 10 |
Language | English |
Content Type | Map |
Object Type |
Image |
Terms of Use |
closedAccess |
Repository | LKCNHM |
Series | Series M101 |
Description |
Exact date unknown |
Mechanism for the production of echolocating clicks by the grey swiftlet, Collocalia spodiopygia
Mechanism for the production of echolocating clicks by the grey swiftlet, Collocalia spodiopygia
1982
Suthers, Roderick A.
Hector, Dwight H.
Collection | Published Works |
---|---|
Author/Creator |
Suthers, Roderick A. Hector, Dwight H. |
Title |
Mechanism for the production of echolocating clicks by the grey swiftlet, Collocalia spodiopygia |
Source Title | Journal of Comparative Physiology. A |
Publication Date | 1982 |
DOI |
http://libproxy1.nus.edu.sg/login?url=http://dx.doi.org/10.1007/BF00619784 |
Subject |
Collocalia Echolocation (Physiology) |
Page | 457-470 |
Language | English |
Content Type | Journal Article |
Object Type |
Text |
Terms of Use |
restrictedAccess |
Repository | LKCNHM |
Volume | 148 |
Abstract |
Orientation sounds of the echolocating swiftlet,Collocalia spodiopygia (family Apodidae) consist of two clicks, each having a duration of a few milliseconds, separated from each other by a silent interval lasting about 20 ms (Fig. 1). Most of the acoustic energy is between 2 and 8 kHz. These clicks are generated in the syrinx and require syringeal airflow. 3. The first member of the double click is initiated by contraction of the sternotrachealis muscles (Fig. 3) which reduces tension on the syrinx by pulling the trachea caudad (Fig. 2). This causes the first bronchial ring to rotate inward (Fig. 10), reducing the syringeal aperture. As the external tympaniform membrane approaches the internal tympaniform membrane, the subsyringeal (= sternal air sac) pressure rises with increasing syringeal resistance and expiratory tracheal airflow peaks at about 6.1 ml/s (Figs. 6, 7, Table 1). Bernoulli forces cause the internal tympaniform membranes to vibrate, producing the first member of the double click (Fig. 9b). The syrinx is closed during the silent intraclick interval by apposition of the syringeal membranes (Figs. 9c, 10). Subsyringeal pressure peaks at about 17cm H2O during this interval (Fig. 6), which is terminated by contraction of the tracheolateralis muscles (Fig. 3) that moves the syrinx craniad and causes the first bronchial ring to rotate outward, thus abducting the external tympaniform membranes and opening the syringeal lumen (Fig. 9d). The second member of the double click occurs as the internal and external tympaniform membranes begin to separate, allowing expiratory airflow to resume (Fig. 9d). Tracheal airflow peaks at about 10 ml/s during this click as syringeal resistance and subsyringeal pressure drop (Figs. 6, 7, Table 1). The second click is terminated by further abduction of the external tympaniform membranes to their resting position (Fig. 9a). 6. The ability of swiftlets to transform a longer duration squeak-like vocalization into two brief clicks by momentarily closing the syrinx probably represents an important adaptation for acoustic orientation. By generating brief clicks they have created a sonar signal with a greater bandwidth and having abrupt rise-decay times that should improve target range determination based on measurement of the pulse-echo interval. |
Series | Documents on echolocation ; E10 |
Mengembangkan populasi walet lewat penangkaran
Mengembangkan populasi walet lewat penangkaran
Collection | Published Works |
---|---|
Author/Creator |
Widodo, Wahyu Dwi |
Title |
Mengembangkan populasi walet lewat penangkaran |
Source Title | Pancaroba: Industri Rumah Lingkungan |
Publication Date | 1995 |
Page | 88-95 |
Language | Indonesian |
Content Type | Journal Article |
Object Type |
Text |
Terms of Use |
closedAccess |
Repository | LKCNHM |
Volume | 1995 |
Series | Documents on breeding ; F13 |
Miri tourism map
Miri tourism map
Collection | Published Works |
---|---|
Title |
Miri tourism map |
Publication Date | 2001 |
Page | 1 |
Language | English |
Content Type | Map |
Object Type |
Image |
Terms of Use |
closedAccess |
Repository | LKCNHM |
Series | Correspondence : Khoo Pee Wong, 2001 on locations of 'esculenta' (as "mossy nest") colonies in Miri, Sarawak; M108 |
Miscellaneous licences (edible birds' nests) Sarawak: regulations, 1963
Miscellaneous licences (edible birds' nests) Sarawak: regulations, 1963
Collection | Published Works |
---|---|
Title |
Miscellaneous licences (edible birds' nests) Sarawak: regulations, 1963 |
Source Title | The Laws of Sarawak, no. S49 |
Publication Date | 1963 |
Page | 2 |
Language | English |
Content Type | Journal Article |
Object Type |
Text |
Terms of Use |
closedAccess |
Repository | LKCNHM |
Series | Documents on miscellaneous topics ; I18 |
Mist-netting neotropical swifts
Mist-netting neotropical swifts
Collection | Published Works |
---|---|
Author/Creator |
Collins, Charles, T. |
Title |
Mist-netting neotropical swifts |
Source Title | EBBA News |
Publication Date | 1967 |
Page | 73-75 |
Language | English |
Content Type | Journal Article |
Object Type |
Text |
Terms of Use |
closedAccess |
Repository | LKCNHM |
Volume | 30 |
Issue | 2 |
Series | Documents on miscellaneous topics ; I22 |
More go to caves
More go to caves
Collection | Published Works |
---|---|
Title |
More go to caves |
Source Title | The Borneo Bulletin |
Publication Date | 1978/02/04 |
Page | 1 |
Language | English |
Content Type | Newspaper Article |
Object Type |
Text |
Terms of Use |
closedAccess |
Repository | LKCNHM |
Volume | 27 |
Issue | 5 |
Series | Documents on miscellaneous topics ; I27 |
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