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Twinkling Nanostars Provides Potential Biomedical Imaging Application

By MedImaging International staff writers
Posted on 04 Aug 2009

Researchers have created magnetically responsive gold nanostars that may offer a new approach to biomedical imaging. More...

The nanostars gyrate when exposed to a rotating magnetic field and can scatter light to produce a pulsating or "twinkling” effect. This twinkling allows them to stand out more distinctly from noisy backgrounds such as those found in biologic tissue.

Purdue University (West Lafayette, IN, USA) researchers Dr. Alexander Wei, a professor of chemistry, and Dr. Kenneth Ritchie, an associate professor of physics, led the team that created the new gyromagnetic imaging method. "This is a very different approach to enhancing contrast in optical imaging,” stated Dr. Wei, who also is a member of the Purdue University Center for Cancer Research and the Oncological Sciences Center. "Brighter isn't necessarily better for imaging; the real issue is background noise, and you can't always overcome this simply by creating brighter particles. With gyromagnetic imaging we can zero in on the nanostars by increasing signal strength while cutting down on background noise.”

The gold nanostars are approximately 100 nm from tip to tip and contain an iron-oxide core that causes them to spin when exposed to a rotating magnet. The arms of the nanostar are designed to respond to a light source and reflect light to a camera when properly aligned. This gives nanostars the appearance of twinkling at rates that can be precisely controlled by the speed of the rotating magnetic field. The unique signature of the twinkling nanostars enables them to be picked out easily from a field of stationary particles, some of which can be brighter than the nanostars.

Any signal that does not have the frequency corresponding to the rotating magnetic field can be suppressed in the images, eliminating background noise, Dr. Ritchie reported. "It was surprising how well this method enhanced the imaging,” he said. "It can improve the contrast of the particles to the background noise by more than 20 decibels and can clearly reveal a gyrating nanostar, where with existing direct imaging methods in many cases you wouldn't be able to definitively find a particle.”

Gold nanostars and other gold nanoparticles have recently been examined as contrast agents for biomedical imaging because of their brightness at near-infrared wavelengths, which can penetrate through tissue better than visible light. However, giving them the ability to twinkle was key to developing a novel dynamic imaging method, according to Dr. Wei. "Gyromagnetic nanostars combine strong optical signaling with a unique mechanism for reducing noise, allowing one to pick out the proverbial needle from the haystack,” he commented. "The key is to enable the nanostars to twinkle at a frequency of our choosing. Our analysis picks out signals at that frequency and translates that information into images of remarkable clarity.”

An article detailing the team's work was published in the July 22, 2009, issue of the Journal of the American Chemical Society (JACS). The U.S. National Institutes of Health (Bethesda, MD, USA) funded the research.

To perform gyromagnetic imaging, the team placed a sample of cells containing nanostars under a standard microscope equipped with a white light source and a rotating magnet. Light was sent through a polarizing beam splitter and into the sample, then reflected back through the beam splitter and to the camera. The camera collected images at 120 frames per second, capturing the signal from the nanostars as they spun at approximately five revolutions per second.

The set-up is simple and practical for general laboratory use, according to Dr. Ritchie. "To translate a new imaging technique into something practical for broad use, it needs to be done without specialized equipment,” he said. "Many other imaging techniques require expensive equipment or lasers, but this method can be done with a halogen lamp and a [US]$10,000 camera.”

After initial data are collected, mathematical operations such as Fourier transforms can be applied to obtain frequency information from the pulsating light signals, allowing the twinkling nanostars to be easily detected. The use of Fourier transforms in imaging techniques, frequently referred to as Fourier-domain imaging, is already known to be useful for reducing noise, but the researcher's method allows a mechanical frequency to be used as input for selective Fourier-based imaging, Dr. Wei noted. "We have external control over the speed of rotation, so we will always know what frequency to focus on when looking for nanostars,” he said.

In evaluating whether nanostars might harm cells during the imaging process, the researchers found that the particles were not only biocompatible, but could actually promote cell growth, according to Dr. Wei. The investigators are continuing to investigate the biologic effects of nanostars inside cells.

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56 (94.175338745117): SELECT dp.*, ch.title as channel, exp.name as author_name, exp.specialization as author_specialization, exp.images as author_photo FROM jos_deeppockets as dp LEFT JOIN jos_experts as exp ON exp.id = dp.author LEFT JOIN jos_deeppockets as ch ON dp.fid = ch.id WHERE 1=1 AND dp.cat=10 AND dp.id=294724847 AND (dp.type='deeppockets_item' OR dp.type='deeppockets_item_link') AND dp.published='1' LIMIT 1

57 (797.03330993652): SELECT dp.*, ch.title as channel, exp.name as author_name, exp.specialization as author_specialization, exp.images as author_photo FROM jos_deeppockets_archive as dp LEFT JOIN jos_experts as exp ON exp.id = dp.author LEFT JOIN jos_deeppockets as ch ON dp.fid = ch.id WHERE 1=1 AND dp.cat=10 AND dp.id=294724847 AND (dp.type='deeppockets_item' OR dp.type='deeppockets_item_link') AND dp.published='1' LIMIT 1

58 (!!!!! 1604.0802001953): SELECT * FROM jos_deeppockets WHERE 1=1 AND id=294724847 AND published='1' union SELECT * FROM jos_deeppockets_archive WHERE 1=1 AND id=294724847 AND published='1' LIMIT 1

59 (70.095062255859): SELECT * FROM jos_deeppockets WHERE 1=1 AND id=294724847 AND published='1' union SELECT * FROM jos_deeppockets_archive WHERE 1=1 AND id=294724847 AND published='1' LIMIT 1

60 (164.03198242188): SELECT * FROM jos_deeppockets WHERE 1=1 AND id=294724847 AND published='1' union SELECT * FROM jos_deeppockets_archive WHERE 1=1 AND id=294724847 AND published='1' LIMIT 1

61 (62.942504882812): SELECT * FROM jos_deeppockets WHERE 1=1 AND id=294724847 AND published='1' union SELECT * FROM jos_deeppockets_archive WHERE 1=1 AND id=294724847 AND published='1' LIMIT 1

62 (125.16975402832): select cover from jos_number where journalid in (5) and cover is not null order by left(issue,2)+right(issue,2)*12 desc limit 1

63 (607.96737670898): SELECT fid FROM jos_deeppockets WHERE id=294724847 AND published='1' union SELECT fid FROM jos_deeppockets_archive WHERE id=294724847 AND published='1' LIMIT 1

64 (74.148178100586): SELECT id,name,sponsor_text FROM jos_deeppockets dp left outer join jos_channel_sponsor cs on dp.id=cs.fid WHERE cat=10 AND TYPE='file_folder' AND published=1 AND id=215 ORDER BY `ordering`

65 (41.007995605469): select jos_twitters.link from jos_twitters where cat=10

66 (46.014785766602): select jos_facebook.link from jos_facebook where cat=10

67 (41.007995605469): select jos_google_plus.link from jos_google_plus where cat=10

68 (41.007995605469): select jos_linkedin.link from jos_linkedin where cat=10

69 (56.028366088867): SELECT fid FROM jos_deeppockets WHERE id=294724847 AND published='1' union SELECT fid FROM jos_deeppockets_archive WHERE id=294724847 AND published='1' LIMIT 1

70 (48.87580871582): SELECT id,name,sponsor_text FROM jos_deeppockets dp left outer join jos_channel_sponsor cs on dp.id=cs.fid WHERE cat=10 AND TYPE='file_folder' AND published=1 AND id=215 ORDER BY `ordering`

71 (461.10153198242): SELECT fid FROM jos_deeppockets WHERE cat=10 AND id=294724847 AND (type='deeppockets_item' OR type='deeppockets_item_link') AND published='1' LIMIT 1

72 (308.99047851562): SELECT fid FROM jos_deeppockets_archive WHERE cat=10 AND id=294724847 AND (type='deeppockets_item' OR type='deeppockets_item_link') AND published='1' LIMIT 1

73 (54.121017456055): SELECT id,name,title FROM jos_deeppockets WHERE cat=10 AND TYPE='file_folder' AND published=1 AND id != 294743300 AND id != 294743301 AND id != 294743302 AND id != 294743303 AND id != 294743304 AND id != 294743305 AND id != 294743306 AND id != 294743307 AND id != 294743308 AND id != 294743309 AND id != 294743310 AND metakey != 'aacc' ORDER BY `ordering`

74 (56.982040405273): SELECT show_live FROM jos_com_show_setting LIMIT 1

75 (36.001205444336): SELECT show_live FROM jos_com_show_setting LIMIT 1

76 (30.040740966797): SELECT show_live FROM jos_com_show_setting LIMIT 1

77 (31.948089599609): SELECT show_live FROM jos_com_show_setting LIMIT 1

78 (29.802322387695): SELECT show_live FROM jos_com_show_setting LIMIT 1

79 (29.087066650391): SELECT show_live FROM jos_com_show_setting LIMIT 1

80 (30.994415283203): SELECT show_live FROM jos_com_show_setting LIMIT 1

81 (35.04753112793): SELECT show_live FROM jos_com_show_setting LIMIT 1

82 (28.848648071289): SELECT show_live FROM jos_com_show_setting LIMIT 1

83 (29.087066650391): SELECT show_live FROM jos_com_show_setting LIMIT 1

84 (28.848648071289): SELECT show_live FROM jos_com_show_setting LIMIT 1

85 (29.087066650391): SELECT show_live FROM jos_com_show_setting LIMIT 1

86 (28.848648071289): SELECT show_live FROM jos_com_show_setting LIMIT 1

87 (28.848648071289): SELECT show_live FROM jos_com_show_setting LIMIT 1

88 (49.829483032227): SELECT fid FROM jos_deeppockets WHERE cat=10 AND id=294724847 AND (type='deeppockets_item' OR type='deeppockets_item_link') AND published='1' LIMIT 1

89 (33.140182495117): SELECT fid FROM jos_deeppockets_archive WHERE cat=10 AND id=294724847 AND (type='deeppockets_item' OR type='deeppockets_item_link') AND published='1' LIMIT 1

90 (36.001205444336): SELECT id,name,title FROM jos_deeppockets WHERE cat=10 AND TYPE='file_folder' AND published=1 AND id != 294743300 AND id != 294743301 AND id != 294743302 AND id != 294743303 AND id != 294743304 AND id != 294743305 AND id != 294743306 AND id != 294743307 AND id != 294743308 AND id != 294743309 AND id != 294743310 AND metakey != 'aacc' ORDER BY `ordering`

91 (92.029571533203): SELECT show_live FROM jos_com_show_setting LIMIT 1

92 (40.054321289062): SELECT show_live FROM jos_com_show_setting LIMIT 1

93 (41.007995605469): SELECT show_live FROM jos_com_show_setting LIMIT 1

94 (36.954879760742): SELECT show_live FROM jos_com_show_setting LIMIT 1

95 (33.855438232422): SELECT show_live FROM jos_com_show_setting LIMIT 1

96 (30.040740966797): SELECT show_live FROM jos_com_show_setting LIMIT 1

97 (30.994415283203): SELECT show_live FROM jos_com_show_setting LIMIT 1

98 (36.954879760742): SELECT show_live FROM jos_com_show_setting LIMIT 1

99 (35.04753112793): SELECT show_live FROM jos_com_show_setting LIMIT 1

100 (37.908554077148): SELECT show_live FROM jos_com_show_setting LIMIT 1

101 (39.815902709961): SELECT show_live FROM jos_com_show_setting LIMIT 1

102 (36.001205444336): SELECT show_live FROM jos_com_show_setting LIMIT 1

103 (36.954879760742): SELECT show_live FROM jos_com_show_setting LIMIT 1

104 (35.04753112793): SELECT show_live FROM jos_com_show_setting LIMIT 1

105 (97.990036010742): SELECT * FROM jos_deeppockets WHERE 1=1 AND id=294724847 AND published='1' union SELECT * FROM jos_deeppockets_archive WHERE 1=1 AND id=294724847 AND published='1' LIMIT 1

106 (66.041946411133): SELECT * FROM jos_deeppockets WHERE 1=1 AND id=294724847 AND published='1' union SELECT * FROM jos_deeppockets_archive WHERE 1=1 AND id=294724847 AND published='1' LIMIT 1

107 (63.896179199219): SELECT dp.*, ch.title as channel, exp.name as author_name, exp.specialization as author_specialization, exp.images as author_photo FROM jos_deeppockets as dp LEFT JOIN jos_experts as exp ON exp.id = dp.author LEFT JOIN jos_deeppockets as ch ON dp.fid = ch.id WHERE 1=1 AND dp.cat=10 AND dp.id=294724847 AND (dp.type='deeppockets_item' OR dp.type='deeppockets_item_link') AND dp.published='1' LIMIT 1

108 (74.148178100586): SELECT dp.*, ch.title as channel, exp.name as author_name, exp.specialization as author_specialization, exp.images as author_photo FROM jos_deeppockets_archive as dp LEFT JOIN jos_experts as exp ON exp.id = dp.author LEFT JOIN jos_deeppockets as ch ON dp.fid = ch.id WHERE 1=1 AND dp.cat=10 AND dp.id=294724847 AND (dp.type='deeppockets_item' OR dp.type='deeppockets_item_link') AND dp.published='1' LIMIT 1

109 (93.936920166016): SELECT * FROM jos_deeppockets WHERE 1=1 AND id=294724847 AND published='1' union SELECT * FROM jos_deeppockets_archive WHERE 1=1 AND id=294724847 AND published='1' LIMIT 1

110 (51.021575927734): SELECT * FROM jos_deeppockets WHERE 1=1 AND id=294724847 AND published='1' union SELECT * FROM jos_deeppockets_archive WHERE 1=1 AND id=294724847 AND published='1' LIMIT 1

111 (56.982040405273): SELECT dp.*, ch.title as channel, exp.name as author_name, exp.specialization as author_specialization, exp.images as author_photo FROM jos_deeppockets as dp LEFT JOIN jos_experts as exp ON exp.id = dp.author LEFT JOIN jos_deeppockets as ch ON dp.fid = ch.id WHERE 1=1 AND dp.id=294724847 AND (dp.type='deeppockets_item' OR dp.type='deeppockets_item_link') AND dp.published='1' LIMIT 1

112 (658.98895263672): SELECT dp.*, ch.title as channel, exp.name as author_name, exp.specialization as author_specialization, exp.images as author_photo FROM jos_deeppockets_archive as dp LEFT JOIN jos_experts as exp ON exp.id = dp.author LEFT JOIN jos_deeppockets as ch ON dp.fid = ch.id WHERE 1=1 AND dp.id=294724847 AND (dp.type='deeppockets_item' OR dp.type='deeppockets_item_link') AND dp.published='1' LIMIT 1

113 (648.02169799805): SELECT dp.name, dp.id, dp2.name as channel, ex.name as author_name, ex.specialization, ex.images FROM jos_deeppockets as dp LEFT JOIN jos_experts as ex ON ex.id = dp.author LEFT JOIN jos_deeppockets as dp2 ON dp2.id = dp.fid WHERE dp.author != 0 AND dp.cat = 10 AND dp.published = 1 AND ( (dp.fid = 294743300) OR (dp.fid = 294743301) OR (dp.fid = 294743302) OR (dp.fid = 294743303) OR (dp.fid = 294743304) OR (dp.fid = 294743305) OR (dp.fid = 294743306) OR (dp.fid = 294743307) OR (dp.fid = 294743308) OR (dp.fid = 294743309) OR (dp.fid = 294743310) ) ORDER BY RAND() LIMIT 1

114 (532.86552429199): SELECT dp.name, dp.id, dp2.name as channel, ex.name as author_name, ex.specialization, ex.images FROM jos_deeppockets as dp LEFT JOIN jos_experts as ex ON ex.id = dp.author LEFT JOIN jos_deeppockets as dp2 ON dp2.id = dp.fid WHERE dp.author != 0 AND dp.cat = 10 AND dp.published = 1 AND ( (dp.fid = 294743300) OR (dp.fid = 294743301) OR (dp.fid = 294743302) OR (dp.fid = 294743303) OR (dp.fid = 294743304) OR (dp.fid = 294743305) OR (dp.fid = 294743306) OR (dp.fid = 294743307) OR (dp.fid = 294743308) OR (dp.fid = 294743309) OR (dp.fid = 294743310) ) ORDER BY RAND() LIMIT 1

115 (133.03756713867): SELECT * FROM jos_deeppockets WHERE 1=1 AND id=294724847 AND published='1' union SELECT * FROM jos_deeppockets_archive WHERE 1=1 AND id=294724847 AND published='1' LIMIT 1

116 (66.041946411133): SELECT * FROM jos_deeppockets WHERE 1=1 AND id=294724847 AND published='1' union SELECT * FROM jos_deeppockets_archive WHERE 1=1 AND id=294724847 AND published='1' LIMIT 1

117 (85.115432739258): SELECT * FROM jos_deeppockets WHERE 1=1 AND id=294724847 AND published='1' union SELECT * FROM jos_deeppockets_archive WHERE 1=1 AND id=294724847 AND published='1' LIMIT 1

118 (54.121017456055): SELECT * FROM jos_deeppockets WHERE 1=1 AND id=294724847 AND published='1' union SELECT * FROM jos_deeppockets_archive WHERE 1=1 AND id=294724847 AND published='1' LIMIT 1

119 (80.108642578125): SELECT * FROM jos_deeppockets WHERE 1=1 AND id=294724847 AND published='1' union SELECT * FROM jos_deeppockets_archive WHERE 1=1 AND id=294724847 AND published='1' LIMIT 1

120 (53.882598876953): SELECT * FROM jos_deeppockets WHERE 1=1 AND id=294724847 AND published='1' union SELECT * FROM jos_deeppockets_archive WHERE 1=1 AND id=294724847 AND published='1' LIMIT 1

121 (46.968460083008): SELECT * FROM jos_deeppockets WHERE 1=1 AND id=294724847 AND published='1' union SELECT * FROM jos_deeppockets_archive WHERE 1=1 AND id=294724847 AND published='1' LIMIT 1

122 (39.100646972656): SELECT * FROM jos_deeppockets WHERE 1=1 AND id=294724847 AND published='1' union SELECT * FROM jos_deeppockets_archive WHERE 1=1 AND id=294724847 AND published='1' LIMIT 1

123 (319.9577331543): SELECT * FROM trending_articles WHERE `journal_id` = 10 AND `timestamp` <= NOW() + INTERVAL 7 DAY ORDER BY `order`

124 (!!!!! 48219.919204712): SELECT * FROM jos_deeppockets WHERE jos_deeppockets.cat = 10 AND jos_deeppockets.type = 'deeppockets_item' AND jos_deeppockets.published = 1 AND jos_deeppockets.created + INTERVAL 14 DAY >= NOW() ORDER BY jos_deeppockets.hits DESC LIMIT 7

125 (707.86476135254): SELECT fid FROM jos_deeppockets WHERE cat=10 AND id=294724847 AND type='deeppockets_item' AND published='1' union SELECT fid FROM jos_deeppockets_archive WHERE cat=10 AND id=294724847 AND type='deeppockets_item' AND published='1' LIMIT 1

126 (!!!!! 9315.013885498): ( SELECT dp.id, dp.name, dp.title, dp.video, dp.video_source, dp.created FROM jos_deeppockets AS dp WHERE dp.video != '' AND dp.video_source != '' AND dp.cat = 10 AND dp.published = 1 AND dp.type != 'deeppockets_item_link' ORDER BY created DESC LIMIT 3 ) UNION ( SELECT dpa.id, dpa.name, dpa.title, dpa.video, dpa.video_source, dpa.created FROM jos_deeppockets_archive AS dpa WHERE dpa.video != '' AND dpa.video_source != '' AND dpa.cat = 10 AND dpa.published = 1 AND dpa.type != 'deeppockets_item_link' ORDER BY created DESC LIMIT 3 ) ORDER BY created DESC LIMIT 3

127 (100.13580322266): ( SELECT dp.id, dp.name, dp.title, dp.video, dp.video_source, dp.created FROM jos_deeppockets AS dp WHERE dp.video != '' AND dp.video_source != '' AND dp.cat = 10 AND dp.published = 1 AND dp.type != 'deeppockets_item_link' ORDER BY created DESC LIMIT 3 ) UNION ( SELECT dpa.id, dpa.name, dpa.title, dpa.video, dpa.video_source, dpa.created FROM jos_deeppockets_archive AS dpa WHERE dpa.video != '' AND dpa.video_source != '' AND dpa.cat = 10 AND dpa.published = 1 AND dpa.type != 'deeppockets_item_link' ORDER BY created DESC LIMIT 3 ) ORDER BY created DESC LIMIT 3

128 (64.13459777832): SELECT dp.id, dp.name, dp.title, dp.video, dp.video_source, dp.created FROM jos_deeppockets AS dp WHERE dp.id = 294803337 LIMIT 1

129 (43.869018554688): SELECT dp.id, dp.name, dp.title, dp.video, dp.video_source, dp.created FROM jos_deeppockets AS dp WHERE dp.id = 294803337 LIMIT 1

130 (65.088272094727): SELECT dp.id, dp.name, dp.title, dp.video, dp.video_source, dp.created FROM jos_deeppockets AS dp WHERE dp.id = 294803276 LIMIT 1

131 (39.100646972656): SELECT dp.id, dp.name, dp.title, dp.video, dp.video_source, dp.created FROM jos_deeppockets AS dp WHERE dp.id = 294803276 LIMIT 1

132 (429.86869812012): SELECT dp.id, dp.name, dp.title, dp.video, dp.video_source, dp.created FROM jos_deeppockets_archive AS dp WHERE dp.id = 294803276 LIMIT 1

133 (84.877014160156): SELECT dp.id, dp.name, dp.title, dp.video, dp.video_source, dp.created FROM jos_deeppockets_archive AS dp WHERE dp.id = 294803276 LIMIT 1

134 (47.922134399414): SELECT dp.id, dp.name, dp.title, dp.video, dp.video_source, dp.created FROM jos_deeppockets AS dp WHERE dp.id = 294802958 LIMIT 1

135 (37.193298339844): SELECT dp.id, dp.name, dp.title, dp.video, dp.video_source, dp.created FROM jos_deeppockets AS dp WHERE dp.id = 294802958 LIMIT 1

136 (524.04403686523): SELECT * FROM jos_deeppockets WHERE 1=1 AND id=294724847 AND (type='deeppockets_item' OR type='deeppockets_item_link') AND published='1' LIMIT 1

137 (369.07196044922): SELECT * FROM jos_deeppockets_archive WHERE 1=1 AND id=294724847 AND (type='deeppockets_item' OR type='deeppockets_item_link') AND published='1' LIMIT 1

138 (51.975250244141): SELECT name FROM jos_deeppockets WHERE id=215

139 (35.04753112793): SELECT name FROM jos_deeppockets WHERE id=215

140 (732.8987121582): SELECT *, DATE_FORMAT(publish_up,'%d %b %Y') AS date_publish_up, DATE_FORMAT(publish_down,'%d %b %Y') AS date_publish_down FROM jos_events WHERE state=1 AND publish_up > NOW() and extra_info REGEXP '((;)|(^))215((;)|($))' AND catid IN (0,110) ORDER BY publish_up ASC LIMIT 3

141 (638.00811767578): SELECT *, DATE_FORMAT(publish_up,'%d %b %Y') AS date_publish_up, DATE_FORMAT(publish_down,'%d %b %Y') AS date_publish_down FROM jos_events WHERE state=1 AND publish_up > NOW() and extra_info REGEXP '((;)|(^))215((;)|($))' AND catid IN (0,110) ORDER BY publish_up ASC LIMIT 3

142 (83.92333984375): SELECT * FROM jos_deeppockets WHERE 1=1 AND id=294724847 AND published='1' union SELECT * FROM jos_deeppockets_archive WHERE 1=1 AND id=294724847 AND published='1' LIMIT 1

143 (54.121017456055): SELECT * FROM jos_deeppockets WHERE 1=1 AND id=294724847 AND published='1' union SELECT * FROM jos_deeppockets_archive WHERE 1=1 AND id=294724847 AND published='1' LIMIT 1

144 (!!!!! 10394.096374512): TRUNCATE TABLE jos_trademed_module

145 (162.83988952637): SELECT dp.*, ch.title as channel, exp.name as author_name, exp.specialization as author_specialization, exp.images as author_photo FROM jos_deeppockets as dp LEFT JOIN jos_experts as exp ON exp.id = dp.author LEFT JOIN jos_deeppockets as ch ON dp.fid = ch.id WHERE 1=1 AND dp.cat=10 AND dp.id=294724847 AND (dp.type='deeppockets_item' OR dp.type='deeppockets_item_link') AND dp.published='1' LIMIT 1

146 (77.009201049805): SELECT dp.*, ch.title as channel, exp.name as author_name, exp.specialization as author_specialization, exp.images as author_photo FROM jos_deeppockets_archive as dp LEFT JOIN jos_experts as exp ON exp.id = dp.author LEFT JOIN jos_deeppockets as ch ON dp.fid = ch.id WHERE 1=1 AND dp.cat=10 AND dp.id=294724847 AND (dp.type='deeppockets_item' OR dp.type='deeppockets_item_link') AND dp.published='1' LIMIT 1

147 (639.91546630859): SELECT * FROM jos_deeppockets WHERE 1=1 AND id=294724847 AND (type='deeppockets_item' OR type='deeppockets_item_link') AND published='1' LIMIT 1

148 (79.870223999023): SELECT * FROM jos_deeppockets WHERE 1=1 AND id=294724847 AND (type='deeppockets_item' OR type='deeppockets_item_link') AND published='1' LIMIT 1

149 (92.029571533203): SELECT * FROM jos_deeppockets WHERE 1=1 AND id=294724847 AND published='1' union SELECT * FROM jos_deeppockets_archive WHERE 1=1 AND id=294724847 AND published='1' LIMIT 1

150 (61.988830566406): SELECT * FROM jos_deeppockets WHERE 1=1 AND id=294724847 AND published='1' union SELECT * FROM jos_deeppockets_archive WHERE 1=1 AND id=294724847 AND published='1' LIMIT 1

151 (!!!!! 1579.9999237061): SELECT jos_item.* FROM jos_item INNER JOIN jos_number ON jos_item.numberID=jos_number.id WHERE 1=1 AND (jos_item.imgMini<>'') AND jos_item.type='L' AND jos_item.numberID= ( SELECT jos_number.id FROM jos_number WHERE jos_number.journalID IN (10) and jos_number.id in (select distinct jos_number.id from jos_number join jos_item on jos_item.numberid=jos_number.id where jos_item.type='P') ORDER BY (CONVERT(SUBSTRING(issue,1,2),SIGNED) + (CONVERT(SUBSTRING(issue,3,2),SIGNED)*100)) DESC LIMIT 0,1 ) ORDER BY RAND() DESC LIMIT 6

152 (72.956085205078): SELECT * FROM jos_deeppockets WHERE 1=1 AND id=294724847 AND published='1' union SELECT * FROM jos_deeppockets_archive WHERE 1=1 AND id=294724847 AND published='1' LIMIT 1

153 (52.928924560547): SELECT * FROM jos_deeppockets WHERE 1=1 AND id=294724847 AND published='1' union SELECT * FROM jos_deeppockets_archive WHERE 1=1 AND id=294724847 AND published='1' LIMIT 1

154 (47.922134399414): SELECT fid FROM jos_deeppockets WHERE cat=10 AND id=294724847 AND type='deeppockets_item' AND published='1' union SELECT fid FROM jos_deeppockets_archive WHERE cat=10 AND id=294724847 AND type='deeppockets_item' AND published='1' LIMIT 1

155 (51.021575927734): select distinct links.* from jos_textlinks links join jos_textlinks_placement placement on links.id=placement.link_id where journal_id=(10) and (channel_id=215 or channel_id is null)

156 (71.048736572266): select distinct links.* from jos_textlinks links join jos_textlinks_placement placement on links.id=placement.link_id where journal_id=(10) and (channel_id=215 or channel_id is null)

157 (64.13459777832): SELECT livesite FROM jos_dp_categories WHERE id=10 AND published='1' LIMIT 1

158 (236.03439331055): SELECT * FROM jos_deeppockets WHERE 1=1 AND id=294724847 AND published='1' union SELECT * FROM jos_deeppockets_archive WHERE 1=1 AND id=294724847 AND published='1' LIMIT 1

159 (72.002410888672): SELECT * FROM jos_deeppockets WHERE 1=1 AND id=294724847 AND published='1' union SELECT * FROM jos_deeppockets_archive WHERE 1=1 AND id=294724847 AND published='1' LIMIT 1

160 (76.055526733398): select jos_twitters.link from jos_twitters where cat=10

161 (46.014785766602): select jos_facebook.link from jos_facebook where cat=10

162 (41.961669921875): select jos_google_plus.link from jos_google_plus where cat=10

163 (41.961669921875): select jos_linkedin.link from jos_linkedin where cat=10

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